diff --git a/changelog/5842.deprecation.rst b/changelog/5842.deprecation.rst
new file mode 100644
index 00000000000..8364526a4fc
--- /dev/null
+++ b/changelog/5842.deprecation.rst
@@ -0,0 +1 @@
+The ``PytestPluginManager.getplugin()`` method has been removed. Use ``PytestPluginManager.get_plugin()`` instead.
diff --git a/src/_pytest/capture.py b/src/_pytest/capture.py
index b914bc2831c..85905dd6893 100644
--- a/src/_pytest/capture.py
+++ b/src/_pytest/capture.py
@@ -999,7 +999,7 @@ def _is_started(self) -> bool:
     @contextlib.contextmanager
     def disabled(self) -> Generator[None]:
         """Temporarily disable capturing while inside the ``with`` block."""
-        capmanager: CaptureManager = self.request.config.pluginmanager.getplugin(
+        capmanager: CaptureManager = self.request.config.pluginmanager.get_plugin(
             "capturemanager"
         )
         with capmanager.global_and_fixture_disabled():
@@ -1028,7 +1028,7 @@ def test_output(capsys):
             captured = capsys.readouterr()
             assert captured.out == "hello\n"
     """
-    capman: CaptureManager = request.config.pluginmanager.getplugin("capturemanager")
+    capman: CaptureManager = request.config.pluginmanager.get_plugin("capturemanager")
     capture_fixture = CaptureFixture(SysCapture, request, _ispytest=True)
     capman.set_fixture(capture_fixture)
     capture_fixture._start()
@@ -1061,7 +1061,7 @@ def test_output(capteesys):
             captured = capteesys.readouterr()
             assert captured.out == "hello\n"
     """
-    capman: CaptureManager = request.config.pluginmanager.getplugin("capturemanager")
+    capman: CaptureManager = request.config.pluginmanager.get_plugin("capturemanager")
     capture_fixture = CaptureFixture(
         SysCapture, request, config=dict(tee=True), _ispytest=True
     )
@@ -1091,7 +1091,7 @@ def test_output(capsysbinary):
             captured = capsysbinary.readouterr()
             assert captured.out == b"hello\n"
     """
-    capman: CaptureManager = request.config.pluginmanager.getplugin("capturemanager")
+    capman: CaptureManager = request.config.pluginmanager.get_plugin("capturemanager")
     capture_fixture = CaptureFixture(SysCaptureBinary, request, _ispytest=True)
     capman.set_fixture(capture_fixture)
     capture_fixture._start()
@@ -1119,7 +1119,7 @@ def test_system_echo(capfd):
             captured = capfd.readouterr()
             assert captured.out == "hello\n"
     """
-    capman: CaptureManager = request.config.pluginmanager.getplugin("capturemanager")
+    capman: CaptureManager = request.config.pluginmanager.get_plugin("capturemanager")
     capture_fixture = CaptureFixture(FDCapture, request, _ispytest=True)
     capman.set_fixture(capture_fixture)
     capture_fixture._start()
@@ -1148,7 +1148,7 @@ def test_system_echo(capfdbinary):
             assert captured.out == b"hello\n"
 
     """
-    capman: CaptureManager = request.config.pluginmanager.getplugin("capturemanager")
+    capman: CaptureManager = request.config.pluginmanager.get_plugin("capturemanager")
     capture_fixture = CaptureFixture(FDCaptureBinary, request, _ispytest=True)
     capman.set_fixture(capture_fixture)
     capture_fixture._start()
diff --git a/src/_pytest/config/__init__.py b/src/_pytest/config/__init__.py
index 60ba5f54a89..237b7d42ad1 100644
--- a/src/_pytest/config/__init__.py
+++ b/src/_pytest/config/__init__.py
@@ -615,11 +615,6 @@ def register(self, plugin: _PluggyPlugin, name: str | None = None) -> str | None
                 self.consider_module(plugin)
         return plugin_name
 
-    def getplugin(self, name: str):
-        # Support deprecated naming because plugins (xdist e.g.) use it.
-        plugin: _PluggyPlugin | None = self.get_plugin(name)
-        return plugin
-
     def hasplugin(self, name: str) -> bool:
         """Return whether a plugin with the given name is registered."""
         return bool(self.get_plugin(name))
diff --git a/src/_pytest/debugging.py b/src/_pytest/debugging.py
index b256f83c8bf..7c32003d44e 100644
--- a/src/_pytest/debugging.py
+++ b/src/_pytest/debugging.py
@@ -244,7 +244,7 @@ def _init_pdb(cls, method, *args, **kwargs):
         if cls._pluginmanager is None:
             capman: CaptureManager | None = None
         else:
-            capman = cls._pluginmanager.getplugin("capturemanager")
+            capman = cls._pluginmanager.get_plugin("capturemanager")
         if capman:
             capman.suspend(in_=True)
 
@@ -287,7 +287,7 @@ class PdbInvoke:
     def pytest_exception_interact(
         self, node: Node, call: CallInfo[Any], report: BaseReport
     ) -> None:
-        capman = node.config.pluginmanager.getplugin("capturemanager")
+        capman = node.config.pluginmanager.get_plugin("capturemanager")
         if capman:
             capman.suspend_global_capture(in_=True)
             out, err = capman.read_global_capture()
@@ -340,7 +340,7 @@ def _enter_pdb(
     # XXX we reuse the TerminalReporter's terminalwriter
     # because this seems to avoid some encoding related troubles
     # for not completely clear reasons.
-    tw = node.config.pluginmanager.getplugin("terminalreporter")._tw
+    tw = node.config.pluginmanager.get_plugin("terminalreporter")._tw
     tw.line()
 
     showcapture = node.config.option.showcapture
diff --git a/src/_pytest/doctest.py b/src/_pytest/doctest.py
index 04d707113cc..5985ae4e888 100644
--- a/src/_pytest/doctest.py
+++ b/src/_pytest/doctest.py
@@ -312,7 +312,7 @@ def _disable_output_capturing_for_darwin(self) -> None:
         """Disable output capturing. Otherwise, stdout is lost to doctest (#985)."""
         if platform.system() != "Darwin":
             return
-        capman = self.config.pluginmanager.getplugin("capturemanager")
+        capman = self.config.pluginmanager.get_plugin("capturemanager")
         if capman:
             capman.suspend_global_capture(in_=True)
             out, err = capman.read_global_capture()
diff --git a/src/_pytest/pastebin.py b/src/_pytest/pastebin.py
index 5e1c06ca9e5..d3bbb44eb23 100644
--- a/src/_pytest/pastebin.py
+++ b/src/_pytest/pastebin.py
@@ -38,7 +38,7 @@ def pytest_configure(config: Config) -> None:
         config.issue_config_time_warning(PASTEBIN.format(), 2)
 
     if config.option.pastebin == "all":
-        tr = config.pluginmanager.getplugin("terminalreporter")
+        tr = config.pluginmanager.get_plugin("terminalreporter")
         # If no terminal reporter plugin is present, nothing we can do here;
         # this can happen when this function executes in a worker node
         # when using pytest-xdist, for example.
@@ -65,7 +65,7 @@ def pytest_unconfigure(config: Config) -> None:
         pastebinfile.close()
         del config.stash[pastebinfile_key]
         # Undo our patching in the terminal reporter.
-        tr = config.pluginmanager.getplugin("terminalreporter")
+        tr = config.pluginmanager.get_plugin("terminalreporter")
         del tr._tw.__dict__["write"]
         # Write summary.
         tr.write_sep("=", "Sending information to Paste Service")
diff --git a/src/_pytest/setuponly.py b/src/_pytest/setuponly.py
index 7e6b46bcdb4..79865b8840f 100644
--- a/src/_pytest/setuponly.py
+++ b/src/_pytest/setuponly.py
@@ -64,7 +64,7 @@ def pytest_fixture_post_finalizer(
 def _show_fixture_action(
     fixturedef: FixtureDef[object], config: Config, msg: str
 ) -> None:
-    capman = config.pluginmanager.getplugin("capturemanager")
+    capman = config.pluginmanager.get_plugin("capturemanager")
     if capman:
         capman.suspend_global_capture()
 
diff --git a/src/_pytest/subtests.py b/src/_pytest/subtests.py
index 0c66e289a4d..74e585ccb97 100644
--- a/src/_pytest/subtests.py
+++ b/src/_pytest/subtests.py
@@ -289,7 +289,7 @@ def __exit__(
 def capturing_output(request: SubRequest) -> Iterator[Captured]:
     option = request.config.getoption("capture", None)
 
-    capman = request.config.pluginmanager.getplugin("capturemanager")
+    capman = request.config.pluginmanager.get_plugin("capturemanager")
     if getattr(capman, "_capture_fixture", None):
         # capsys or capfd are active, subtest should not capture.
         fixture = None
@@ -318,7 +318,7 @@ def capturing_output(request: SubRequest) -> Iterator[Captured]:
 def capturing_logs(
     request: SubRequest,
 ) -> Iterator[CapturedLogs | None]:
-    logging_plugin: LoggingPlugin | None = request.config.pluginmanager.getplugin(
+    logging_plugin: LoggingPlugin | None = request.config.pluginmanager.get_plugin(
         "logging-plugin"
     )
     if logging_plugin is None:
diff --git a/testing/logging/test_fixture.py b/testing/logging/test_fixture.py
index 95c0f44b7f5..18fe7152329 100644
--- a/testing/logging/test_fixture.py
+++ b/testing/logging/test_fixture.py
@@ -385,7 +385,7 @@ def test_ini_controls_global_log_level(pytester: Pytester) -> None:
         import pytest
         import logging
         def test_log_level_override(request, caplog):
-            plugin = request.config.pluginmanager.getplugin('logging-plugin')
+            plugin = request.config.pluginmanager.get_plugin('logging-plugin')
             assert plugin.log_level == logging.ERROR
             logger = logging.getLogger('catchlog')
             logger.warning("WARNING message won't be shown")
@@ -413,7 +413,7 @@ def test_can_override_global_log_level(pytester: Pytester) -> None:
         import logging
         def test_log_level_override(request, caplog):
             logger = logging.getLogger('catchlog')
-            plugin = request.config.pluginmanager.getplugin('logging-plugin')
+            plugin = request.config.pluginmanager.get_plugin('logging-plugin')
             assert plugin.log_level == logging.WARNING
 
             logger.info("INFO message won't be shown")
@@ -479,7 +479,7 @@ def test_captures_despite_exception(pytester: Pytester) -> None:
         import logging
         def test_log_level_override(request, caplog):
             logger = logging.getLogger('catchlog')
-            plugin = request.config.pluginmanager.getplugin('logging-plugin')
+            plugin = request.config.pluginmanager.get_plugin('logging-plugin')
             assert plugin.log_level == logging.WARNING
 
             logger.error("ERROR message " + "will be shown")
@@ -522,7 +522,7 @@ def function_that_logs():
             print('Print ' + 'message')
 
         def test_that_fails(request, caplog):
-            plugin = request.config.pluginmanager.getplugin('logging-plugin')
+            plugin = request.config.pluginmanager.get_plugin('logging-plugin')
             assert plugin.log_level == logging.INFO
 
             with caplog.at_level(logging.DEBUG):
diff --git a/testing/logging/test_reporting.py b/testing/logging/test_reporting.py
index 165d774435d..bb799055e8f 100644
--- a/testing/logging/test_reporting.py
+++ b/testing/logging/test_reporting.py
@@ -260,7 +260,7 @@ def test_log_cli_default_level(pytester: Pytester) -> None:
         import pytest
         import logging
         def test_log_cli(request):
-            plugin = request.config.pluginmanager.getplugin('logging-plugin')
+            plugin = request.config.pluginmanager.get_plugin('logging-plugin')
             assert plugin.log_cli_handler.level == logging.NOTSET
             logging.getLogger('catchlog').info("INFO message won't be shown")
             logging.getLogger('catchlog').warning("WARNING message will be shown")
@@ -551,7 +551,7 @@ def test_log_cli_level(pytester: Pytester) -> None:
         import pytest
         import logging
         def test_log_cli(request):
-            plugin = request.config.pluginmanager.getplugin('logging-plugin')
+            plugin = request.config.pluginmanager.get_plugin('logging-plugin')
             assert plugin.log_cli_handler.level == logging.INFO
             logging.getLogger('catchlog').debug("This log message won't be shown")
             logging.getLogger('catchlog').info("This log message will be shown")
@@ -607,7 +607,7 @@ def test_log_cli_ini_level(pytester: Pytester) -> None:
         import pytest
         import logging
         def test_log_cli(request):
-            plugin = request.config.pluginmanager.getplugin('logging-plugin')
+            plugin = request.config.pluginmanager.get_plugin('logging-plugin')
             assert plugin.log_cli_handler.level == logging.INFO
             logging.getLogger('catchlog').debug("This log message won't be shown")
             logging.getLogger('catchlog').info("This log message will be shown")
@@ -685,7 +685,7 @@ def test_log_file_cli(pytester: Pytester) -> None:
         import pytest
         import logging
         def test_log_file(request):
-            plugin = request.config.pluginmanager.getplugin('logging-plugin')
+            plugin = request.config.pluginmanager.get_plugin('logging-plugin')
             assert plugin.log_file_handler.level == logging.WARNING
             logging.getLogger('catchlog').info("This log message won't be shown")
             logging.getLogger('catchlog').warning("This log message will be shown")
@@ -718,7 +718,7 @@ def test_log_file_mode_cli(pytester: Pytester) -> None:
         import pytest
         import logging
         def test_log_file(request):
-            plugin = request.config.pluginmanager.getplugin('logging-plugin')
+            plugin = request.config.pluginmanager.get_plugin('logging-plugin')
             assert plugin.log_file_handler.level == logging.WARNING
             logging.getLogger('catchlog').info("This log message won't be shown")
             logging.getLogger('catchlog').warning("This log message will be shown")
@@ -758,7 +758,7 @@ def test_log_file_mode_cli_invalid(pytester: Pytester) -> None:
         import pytest
         import logging
         def test_log_file(request):
-            plugin = request.config.pluginmanager.getplugin('logging-plugin')
+            plugin = request.config.pluginmanager.get_plugin('logging-plugin')
             assert plugin.log_file_handler.level == logging.WARNING
             logging.getLogger('catchlog').info("This log message won't be shown")
             logging.getLogger('catchlog').warning("This log message will be shown")
@@ -785,7 +785,7 @@ def test_log_file_cli_level(pytester: Pytester) -> None:
         import pytest
         import logging
         def test_log_file(request):
-            plugin = request.config.pluginmanager.getplugin('logging-plugin')
+            plugin = request.config.pluginmanager.get_plugin('logging-plugin')
             assert plugin.log_file_handler.level == logging.INFO
             logging.getLogger('catchlog').debug("This log message won't be shown")
             logging.getLogger('catchlog').info("This log message will be shown")
@@ -836,7 +836,7 @@ def test_log_file_ini(pytester: Pytester) -> None:
         import pytest
         import logging
         def test_log_file(request):
-            plugin = request.config.pluginmanager.getplugin('logging-plugin')
+            plugin = request.config.pluginmanager.get_plugin('logging-plugin')
             assert plugin.log_file_handler.level == logging.WARNING
             logging.getLogger('catchlog').info("This log message won't be shown")
             logging.getLogger('catchlog').warning("This log message will be shown")
@@ -874,7 +874,7 @@ def test_log_file_mode_ini(pytester: Pytester) -> None:
         import pytest
         import logging
         def test_log_file(request):
-            plugin = request.config.pluginmanager.getplugin('logging-plugin')
+            plugin = request.config.pluginmanager.get_plugin('logging-plugin')
             assert plugin.log_file_handler.level == logging.WARNING
             logging.getLogger('catchlog').info("This log message won't be shown")
             logging.getLogger('catchlog').warning("This log message will be shown")
@@ -914,7 +914,7 @@ def test_log_file_ini_level(pytester: Pytester) -> None:
         import pytest
         import logging
         def test_log_file(request):
-            plugin = request.config.pluginmanager.getplugin('logging-plugin')
+            plugin = request.config.pluginmanager.get_plugin('logging-plugin')
             assert plugin.log_file_handler.level == logging.INFO
             logging.getLogger('catchlog').debug("This log message won't be shown")
             logging.getLogger('catchlog').info("This log message will be shown")
diff --git a/testing/python/collect.py b/testing/python/collect.py
index dddd15b8f67..940d635f798 100644
--- a/testing/python/collect.py
+++ b/testing/python/collect.py
@@ -1290,7 +1290,7 @@ def pytest_pycollect_makeitem(collector, name, obj):
         """
         )
         item = pytester.getitem("def test_func(): pass")
-        item.config.pluginmanager.getplugin("runner")
+        item.config.pluginmanager.get_plugin("runner")
         assert item.location == ("ABCDE", 42, "custom")
 
     def test_func_reportinfo(self, pytester: Pytester) -> None:
diff --git a/testing/test_capture.py b/testing/test_capture.py
index a0a4f044d62..9a0c6f38814 100644
--- a/testing/test_capture.py
+++ b/testing/test_capture.py
@@ -1749,7 +1749,7 @@ def test_libedit_workaround(pytester: Pytester) -> None:
 
 
     def pytest_terminal_summary(config):
-        capture = config.pluginmanager.getplugin("capturemanager")
+        capture = config.pluginmanager.get_plugin("capturemanager")
         capture.suspend_global_capture(in_=True)
 
         print("Enter 'hi'")
diff --git a/testing/test_config.py b/testing/test_config.py
index 282e66409f7..7c40d06b77c 100644
--- a/testing/test_config.py
+++ b/testing/test_config.py
@@ -1917,7 +1917,7 @@ def my_dists():
     )
     monkeypatch.setenv("PYTEST_PLUGINS", "mytestplugin")
     config = pytester.parseconfig()
-    plugin = config.pluginmanager.getplugin("mytestplugin")
+    plugin = config.pluginmanager.get_plugin("mytestplugin")
     assert plugin.x == 42
 
 
diff --git a/testing/test_debugging.py b/testing/test_debugging.py
index 3a67cfa8cd6..85ecb4d1ab1 100644
--- a/testing/test_debugging.py
+++ b/testing/test_debugging.py
@@ -114,7 +114,7 @@ def pdblist(self, request):
         def mypdb(*args):
             pdblist.append(args)
 
-        plugin = request.config.pluginmanager.getplugin("debugging")
+        plugin = request.config.pluginmanager.get_plugin("debugging")
         monkeypatch.setattr(plugin, "post_mortem", mypdb)
         return pdblist
 
diff --git a/testing/test_pastebin.py b/testing/test_pastebin.py
index 0cf05c475b5..aaadc7b3be9 100644
--- a/testing/test_pastebin.py
+++ b/testing/test_pastebin.py
@@ -15,7 +15,7 @@ class TestPasteCapture:
     @pytest.fixture
     def pastebinlist(self, monkeypatch, request) -> list[str | bytes]:
         pastebinlist: list[str | bytes] = []
-        plugin = request.config.pluginmanager.getplugin("pastebin")
+        plugin = request.config.pluginmanager.get_plugin("pastebin")
         monkeypatch.setattr(plugin, "create_new_paste", pastebinlist.append)
         return pastebinlist
 
@@ -106,7 +106,7 @@ def test_deprecated(self, pytester: Pytester, pastebinlist) -> None:
 class TestPaste:
     @pytest.fixture
     def pastebin(self, request):
-        return request.config.pluginmanager.getplugin("pastebin")
+        return request.config.pluginmanager.get_plugin("pastebin")
 
     @pytest.fixture
     def mocked_urlopen_invalid(self, monkeypatch: MonkeyPatch):
diff --git a/testing/test_terminal.py b/testing/test_terminal.py
index 21b0557a470..b37651f36a8 100644
--- a/testing/test_terminal.py
+++ b/testing/test_terminal.py
@@ -1625,7 +1625,7 @@ def test_terminalreporter_reportopt_addopts(pytester: Pytester) -> None:
 
         @pytest.fixture
         def tr(request):
-            tr = request.config.pluginmanager.getplugin("terminalreporter")
+            tr = request.config.pluginmanager.get_plugin("terminalreporter")
             return tr
         def test_opt(tr):
             assert tr.hasopt('skipped')