diff --git a/crates/ruff_linter/resources/test/fixtures/flake8_pyi/PYI018.py b/crates/ruff_linter/resources/test/fixtures/flake8_pyi/PYI018.py
index 75dbf08dd698b..402c17d7ba734 100644
--- a/crates/ruff_linter/resources/test/fixtures/flake8_pyi/PYI018.py
+++ b/crates/ruff_linter/resources/test/fixtures/flake8_pyi/PYI018.py
@@ -1,8 +1,13 @@
 import typing
+import typing_extensions
 from typing import TypeVar
+from typing_extensions import ParamSpec, TypeVarTuple
 
 _T = typing.TypeVar("_T")
-_P = TypeVar("_P")
+_Ts = typing_extensions.TypeVarTuple("_Ts")
+_P = ParamSpec("_P")
+_P2 = typing.ParamSpec("_P2")
+_Ts2 = TypeVarTuple("_Ts2")
 
 # OK
 _UsedTypeVar = TypeVar("_UsedTypeVar")
diff --git a/crates/ruff_linter/resources/test/fixtures/flake8_pyi/PYI018.pyi b/crates/ruff_linter/resources/test/fixtures/flake8_pyi/PYI018.pyi
index 75dbf08dd698b..402c17d7ba734 100644
--- a/crates/ruff_linter/resources/test/fixtures/flake8_pyi/PYI018.pyi
+++ b/crates/ruff_linter/resources/test/fixtures/flake8_pyi/PYI018.pyi
@@ -1,8 +1,13 @@
 import typing
+import typing_extensions
 from typing import TypeVar
+from typing_extensions import ParamSpec, TypeVarTuple
 
 _T = typing.TypeVar("_T")
-_P = TypeVar("_P")
+_Ts = typing_extensions.TypeVarTuple("_Ts")
+_P = ParamSpec("_P")
+_P2 = typing.ParamSpec("_P2")
+_Ts2 = TypeVarTuple("_Ts2")
 
 # OK
 _UsedTypeVar = TypeVar("_UsedTypeVar")
diff --git a/crates/ruff_linter/src/rules/flake8_pyi/rules/unused_private_type_definition.rs b/crates/ruff_linter/src/rules/flake8_pyi/rules/unused_private_type_definition.rs
index 094d1697c9f06..5da722a904394 100644
--- a/crates/ruff_linter/src/rules/flake8_pyi/rules/unused_private_type_definition.rs
+++ b/crates/ruff_linter/src/rules/flake8_pyi/rules/unused_private_type_definition.rs
@@ -7,28 +7,35 @@ use ruff_text_size::Ranged;
 use crate::checkers::ast::Checker;
 
 /// ## What it does
-/// Checks for the presence of unused private `TypeVar` declarations.
+/// Checks for the presence of unused private `TypeVar`, `ParamSpec` or
+/// `TypeVarTuple` declarations.
 ///
 /// ## Why is this bad?
-/// A private `TypeVar` that is defined but not used is likely a mistake, and
+/// A private `TypeVar` that is defined but not used is likely a mistake. It
 /// should either be used, made public, or removed to avoid confusion.
 ///
 /// ## Example
 /// ```python
 /// import typing
+/// import typing_extensions
 ///
 /// _T = typing.TypeVar("_T")
+/// _Ts = typing_extensions.TypeVarTuple("_Ts")
 /// ```
 #[violation]
 pub struct UnusedPrivateTypeVar {
-    name: String,
+    type_var_like_name: String,
+    type_var_like_kind: String,
 }
 
 impl Violation for UnusedPrivateTypeVar {
     #[derive_message_formats]
     fn message(&self) -> String {
-        let UnusedPrivateTypeVar { name } = self;
-        format!("Private TypeVar `{name}` is never used")
+        let UnusedPrivateTypeVar {
+            type_var_like_name,
+            type_var_like_kind,
+        } = self;
+        format!("Private {type_var_like_kind} `{type_var_like_name}` is never used")
     }
 }
 
@@ -185,13 +192,26 @@ pub(crate) fn unused_private_type_var(
         let Expr::Call(ast::ExprCall { func, .. }) = value.as_ref() else {
             continue;
         };
-        if !checker.semantic().match_typing_expr(func, "TypeVar") {
+
+        let semantic = checker.semantic();
+        let Some(type_var_like_kind) = semantic.resolve_call_path(func).and_then(|call_path| {
+            if semantic.match_typing_call_path(&call_path, "TypeVar") {
+                Some("TypeVar")
+            } else if semantic.match_typing_call_path(&call_path, "ParamSpec") {
+                Some("ParamSpec")
+            } else if semantic.match_typing_call_path(&call_path, "TypeVarTuple") {
+                Some("TypeVarTuple")
+            } else {
+                None
+            }
+        }) else {
             continue;
-        }
+        };
 
         diagnostics.push(Diagnostic::new(
             UnusedPrivateTypeVar {
-                name: id.to_string(),
+                type_var_like_name: id.to_string(),
+                type_var_like_kind: type_var_like_kind.to_string(),
             },
             binding.range(),
         ));
diff --git a/crates/ruff_linter/src/rules/flake8_pyi/snapshots/ruff_linter__rules__flake8_pyi__tests__PYI018_PYI018.py.snap b/crates/ruff_linter/src/rules/flake8_pyi/snapshots/ruff_linter__rules__flake8_pyi__tests__PYI018_PYI018.py.snap
index 878d32f43d633..9ca737a9209ca 100644
--- a/crates/ruff_linter/src/rules/flake8_pyi/snapshots/ruff_linter__rules__flake8_pyi__tests__PYI018_PYI018.py.snap
+++ b/crates/ruff_linter/src/rules/flake8_pyi/snapshots/ruff_linter__rules__flake8_pyi__tests__PYI018_PYI018.py.snap
@@ -1,22 +1,52 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_pyi/mod.rs
 ---
-PYI018.py:4:1: PYI018 Private TypeVar `_T` is never used
+PYI018.py:6:1: PYI018 Private TypeVar `_T` is never used
   |
-2 | from typing import TypeVar
-3 | 
-4 | _T = typing.TypeVar("_T")
+4 | from typing_extensions import ParamSpec, TypeVarTuple
+5 | 
+6 | _T = typing.TypeVar("_T")
   | ^^ PYI018
-5 | _P = TypeVar("_P")
+7 | _Ts = typing_extensions.TypeVarTuple("_Ts")
+8 | _P = ParamSpec("_P")
   |
 
-PYI018.py:5:1: PYI018 Private TypeVar `_P` is never used
+PYI018.py:7:1: PYI018 Private TypeVarTuple `_Ts` is never used
   |
-4 | _T = typing.TypeVar("_T")
-5 | _P = TypeVar("_P")
-  | ^^ PYI018
-6 | 
-7 | # OK
+6 | _T = typing.TypeVar("_T")
+7 | _Ts = typing_extensions.TypeVarTuple("_Ts")
+  | ^^^ PYI018
+8 | _P = ParamSpec("_P")
+9 | _P2 = typing.ParamSpec("_P2")
   |
 
+PYI018.py:8:1: PYI018 Private ParamSpec `_P` is never used
+   |
+ 6 | _T = typing.TypeVar("_T")
+ 7 | _Ts = typing_extensions.TypeVarTuple("_Ts")
+ 8 | _P = ParamSpec("_P")
+   | ^^ PYI018
+ 9 | _P2 = typing.ParamSpec("_P2")
+10 | _Ts2 = TypeVarTuple("_Ts2")
+   |
+
+PYI018.py:9:1: PYI018 Private ParamSpec `_P2` is never used
+   |
+ 7 | _Ts = typing_extensions.TypeVarTuple("_Ts")
+ 8 | _P = ParamSpec("_P")
+ 9 | _P2 = typing.ParamSpec("_P2")
+   | ^^^ PYI018
+10 | _Ts2 = TypeVarTuple("_Ts2")
+   |
+
+PYI018.py:10:1: PYI018 Private TypeVarTuple `_Ts2` is never used
+   |
+ 8 | _P = ParamSpec("_P")
+ 9 | _P2 = typing.ParamSpec("_P2")
+10 | _Ts2 = TypeVarTuple("_Ts2")
+   | ^^^^ PYI018
+11 | 
+12 | # OK
+   |
+
 
diff --git a/crates/ruff_linter/src/rules/flake8_pyi/snapshots/ruff_linter__rules__flake8_pyi__tests__PYI018_PYI018.pyi.snap b/crates/ruff_linter/src/rules/flake8_pyi/snapshots/ruff_linter__rules__flake8_pyi__tests__PYI018_PYI018.pyi.snap
index d82b93d9b1c24..4585ae25babeb 100644
--- a/crates/ruff_linter/src/rules/flake8_pyi/snapshots/ruff_linter__rules__flake8_pyi__tests__PYI018_PYI018.pyi.snap
+++ b/crates/ruff_linter/src/rules/flake8_pyi/snapshots/ruff_linter__rules__flake8_pyi__tests__PYI018_PYI018.pyi.snap
@@ -1,22 +1,52 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_pyi/mod.rs
 ---
-PYI018.pyi:4:1: PYI018 Private TypeVar `_T` is never used
+PYI018.pyi:6:1: PYI018 Private TypeVar `_T` is never used
   |
-2 | from typing import TypeVar
-3 | 
-4 | _T = typing.TypeVar("_T")
+4 | from typing_extensions import ParamSpec, TypeVarTuple
+5 | 
+6 | _T = typing.TypeVar("_T")
   | ^^ PYI018
-5 | _P = TypeVar("_P")
+7 | _Ts = typing_extensions.TypeVarTuple("_Ts")
+8 | _P = ParamSpec("_P")
   |
 
-PYI018.pyi:5:1: PYI018 Private TypeVar `_P` is never used
+PYI018.pyi:7:1: PYI018 Private TypeVarTuple `_Ts` is never used
   |
-4 | _T = typing.TypeVar("_T")
-5 | _P = TypeVar("_P")
-  | ^^ PYI018
-6 | 
-7 | # OK
+6 | _T = typing.TypeVar("_T")
+7 | _Ts = typing_extensions.TypeVarTuple("_Ts")
+  | ^^^ PYI018
+8 | _P = ParamSpec("_P")
+9 | _P2 = typing.ParamSpec("_P2")
   |
 
+PYI018.pyi:8:1: PYI018 Private ParamSpec `_P` is never used
+   |
+ 6 | _T = typing.TypeVar("_T")
+ 7 | _Ts = typing_extensions.TypeVarTuple("_Ts")
+ 8 | _P = ParamSpec("_P")
+   | ^^ PYI018
+ 9 | _P2 = typing.ParamSpec("_P2")
+10 | _Ts2 = TypeVarTuple("_Ts2")
+   |
+
+PYI018.pyi:9:1: PYI018 Private ParamSpec `_P2` is never used
+   |
+ 7 | _Ts = typing_extensions.TypeVarTuple("_Ts")
+ 8 | _P = ParamSpec("_P")
+ 9 | _P2 = typing.ParamSpec("_P2")
+   | ^^^ PYI018
+10 | _Ts2 = TypeVarTuple("_Ts2")
+   |
+
+PYI018.pyi:10:1: PYI018 Private TypeVarTuple `_Ts2` is never used
+   |
+ 8 | _P = ParamSpec("_P")
+ 9 | _P2 = typing.ParamSpec("_P2")
+10 | _Ts2 = TypeVarTuple("_Ts2")
+   | ^^^^ PYI018
+11 | 
+12 | # OK
+   |
+