diff --git a/doc/whatsnew/2/2.15/index.rst b/doc/whatsnew/2/2.15/index.rst
index 6a285fe028..5d718f12c7 100644
--- a/doc/whatsnew/2/2.15/index.rst
+++ b/doc/whatsnew/2/2.15/index.rst
@@ -15,7 +15,6 @@ Summary -- Release highlights
 New checkers
 ============
 
-
 Removed checkers
 ================
 
@@ -23,6 +22,10 @@ Removed checkers
 Extensions
 ==========
 
+* ``NoDictSubscriptChecker``
+
+    * Added optional extension ``no-dict-subscript`` to emit messages when the ``[]`` operator is used
+      to access a dictionary value.
 
 False positives fixed
 =====================
diff --git a/pylint/extensions/dictionary_subscript.py b/pylint/extensions/dictionary_subscript.py
new file mode 100644
index 0000000000..7fb5e79b27
--- /dev/null
+++ b/pylint/extensions/dictionary_subscript.py
@@ -0,0 +1,31 @@
+# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+# For details: https://github.com/PyCQA/pylint/blob/main/LICENSE
+# Copyright (c) https://github.com/PyCQA/pylint/blob/main/CONTRIBUTORS.txt
+
+"""Check for dictionary read-access via subscript."""
+
+from astroid import Assign, Dict, nodes
+
+from pylint.checkers import BaseChecker, utils
+from pylint.lint import PyLinter
+
+
+class NoDictSubscriptChecker(BaseChecker):
+    name = "no-dict-subscript"
+    msgs = {
+        "R5701": (
+            "Using dict operator [], consider using get() instead",
+            "dict-subscript",
+            "Used to warn when subscripting a dictionary instead of using the get() function",
+        ),
+    }
+
+    def visit_subscript(self, node: nodes.Subscript) -> None:
+        if isinstance(utils.safe_infer(node.value), Dict) and not isinstance(
+            node.parent, Assign
+        ):
+            self.add_message("dict-subscript", node=node)
+
+
+def register(linter: PyLinter) -> None:
+    linter.register_checker(NoDictSubscriptChecker(linter))
diff --git a/tests/functional/ext/check_dictionary_subscript/check_dictionary_subscript.py b/tests/functional/ext/check_dictionary_subscript/check_dictionary_subscript.py
new file mode 100644
index 0000000000..7ce034895b
--- /dev/null
+++ b/tests/functional/ext/check_dictionary_subscript/check_dictionary_subscript.py
@@ -0,0 +1,8 @@
+"""Checks the use of dictionary subscripts"""
+
+mydict = {"foo": 3}
+
+print(mydict["foo"])
+print(mydict.get("foo"))
+
+mydict["foo"] = 4
diff --git a/tests/functional/ext/check_dictionary_subscript/check_dictionary_subscript.rc b/tests/functional/ext/check_dictionary_subscript/check_dictionary_subscript.rc
new file mode 100644
index 0000000000..3bd5028778
--- /dev/null
+++ b/tests/functional/ext/check_dictionary_subscript/check_dictionary_subscript.rc
@@ -0,0 +1,2 @@
+[MAIN]
+load-plugins=pylint.extensions.dictionary_subscript,
diff --git a/tests/functional/ext/check_dictionary_subscript/check_dictionary_subscript.txt b/tests/functional/ext/check_dictionary_subscript/check_dictionary_subscript.txt
new file mode 100644
index 0000000000..a032e1a152
--- /dev/null
+++ b/tests/functional/ext/check_dictionary_subscript/check_dictionary_subscript.txt
@@ -0,0 +1 @@
+dict-subscript:5:6:5:19::"Using dict operator [], consider using get() instead":UNDEFINED