diff --git a/sklearn/neighbors/_graph.py b/sklearn/neighbors/_graph.py
index 418761c2d21ee..ca85c64ab8f61 100644
--- a/sklearn/neighbors/_graph.py
+++ b/sklearn/neighbors/_graph.py
@@ -8,7 +8,13 @@
 from ._base import NeighborsBase
 from ._unsupervised import NearestNeighbors
 from ..base import TransformerMixin, ClassNamePrefixFeaturesOutMixin
-from ..utils._param_validation import StrOptions
+from ..metrics.pairwise import distance_metrics
+from ..utils._param_validation import (
+    StrOptions,
+    Interval,
+    Integral,
+    validate_params,
+)
 from ..utils.validation import check_is_fitted
 
 
@@ -224,6 +230,23 @@ def radius_neighbors_graph(
     return X.radius_neighbors_graph(query, radius, mode)
 
 
+@validate_params(
+    {
+        "mode": [StrOptions({"distance", "connectivity"}), None],
+        "n_neighbors": [Interval(Integral, 1, None, closed="left"), None],
+        "algorithm": [StrOptions({"auto", "ball_tree", "kd_tree", "brute"}), None],
+        "leaf_size": [Interval(Integral, 1, None, closed="left"), None],
+        "metric": [
+            StrOptions(set(distance_metrics())),
+            StrOptions({"minkowski"}),
+            callable,
+            None,
+        ],
+        "p": [Interval(Integral, 1, None, closed="left"), None],
+        "metric_params": [dict, None],
+        "n_jobs": [Integral, None],
+    }
+)
 class KNeighborsTransformer(
     ClassNamePrefixFeaturesOutMixin, KNeighborsMixin, TransformerMixin, NeighborsBase
 ):
@@ -342,12 +365,6 @@ class KNeighborsTransformer(
     (178, 178)
     """
 
-    _parameter_constraints: dict = {
-        **NeighborsBase._parameter_constraints,
-        "mode": [StrOptions({"distance", "connectivity"})],
-    }
-    _parameter_constraints.pop("radius")
-
     def __init__(
         self,
         *,
diff --git a/sklearn/tests/test_public_functions.py b/sklearn/tests/test_public_functions.py
index 3157e344cbef3..02af7d2b2032e 100644
--- a/sklearn/tests/test_public_functions.py
+++ b/sklearn/tests/test_public_functions.py
@@ -263,6 +263,7 @@ def _check_function_param_validation(
     "sklearn.model_selection.permutation_test_score",
     "sklearn.model_selection.train_test_split",
     "sklearn.model_selection.validation_curve",
+    "sklearn.neighbors.KNeighborsTransformer",
     "sklearn.neighbors.sort_graph_by_row_values",
     "sklearn.preprocessing.add_dummy_feature",
     "sklearn.preprocessing.binarize",