diff --git a/modules/dnn/src/layers/normalize_bbox_layer.cpp b/modules/dnn/src/layers/normalize_bbox_layer.cpp
index 1ed9f4421a..5e6e249a56 100644
--- a/modules/dnn/src/layers/normalize_bbox_layer.cpp
+++ b/modules/dnn/src/layers/normalize_bbox_layer.cpp
@@ -62,9 +62,19 @@ public:
         pnorm = params.get<float>("p", 2);
         epsilon = params.get<float>("eps", 1e-10f);
         acrossSpatial = params.get<bool>("across_spatial", true);
-        startAxis = params.get<int>("start_axis", 1);
-        CV_Assert(!params.has("across_spatial") || !params.has("end_axis"));
-        endAxis = params.get<int>("end_axis", acrossSpatial ? -1 : startAxis);
+
+        if (!params.has("start_axis") && !params.has("across_spatial"))
+        {
+            int axis = params.get<int>("axis", -1);
+            startAxis = axis;
+            endAxis = axis;
+        }
+        else
+        {
+            startAxis = params.get<int>("start_axis", 1);
+            CV_Assert(!params.has("across_spatial") || !params.has("end_axis"));
+            endAxis = params.get<int>("end_axis", acrossSpatial ? -1 : startAxis);
+        }
         CV_Assert(pnorm > 0);
     }
 
diff --git a/modules/dnn/src/onnx/onnx_importer2.cpp b/modules/dnn/src/onnx/onnx_importer2.cpp
index 0dde754496..132d715d75 100644
--- a/modules/dnn/src/onnx/onnx_importer2.cpp
+++ b/modules/dnn/src/onnx/onnx_importer2.cpp
@@ -204,6 +204,7 @@ protected:
     void parseInstanceNormalization(LayerParams& layerParams, const opencv_onnx::NodeProto& node_proto);
     void parseLayerNorm            (LayerParams& layerParams, const opencv_onnx::NodeProto& node_proto);
     void parseLeakyRelu            (LayerParams& layerParams, const opencv_onnx::NodeProto& node_proto);
+    void parseLpNormalization      (LayerParams& layerParams, const opencv_onnx::NodeProto& node_proto);
     void parseLRN                  (LayerParams& layerParams, const opencv_onnx::NodeProto& node_proto);
     void parseLSTM                 (LayerParams& layerParams, const opencv_onnx::NodeProto& node_proto);
     void parseMatMul               (LayerParams& layerParams, const opencv_onnx::NodeProto& node_proto);
@@ -1311,6 +1312,12 @@ void ONNXImporter2::parsePRelu(LayerParams& layerParams, const opencv_onnx::Node
     addLayer(layerParams, node_proto, 1);
 }
 
+void ONNXImporter2::parseLpNormalization(LayerParams& layerParams, const opencv_onnx::NodeProto& node_proto)
+{
+    layerParams.type = "NormalizeBBox";
+    addLayer(layerParams, node_proto);
+}
+
 void ONNXImporter2::parseLRN(LayerParams& layerParams, const opencv_onnx::NodeProto& node_proto)
 {
     replaceLayerParam(layerParams, "size", "local_size");
@@ -2722,6 +2729,7 @@ void ONNXImporter2::buildDispatchMap_ONNX_AI()
     dispatch["Abs"] = &ONNXImporter2::parseAbs;
     dispatch["PRelu"] = &ONNXImporter2::parsePRelu;
     dispatch["NonZero"] = &ONNXImporter2::parseNonZero;
+    dispatch["LpNormalization"] = &ONNXImporter2::parseLpNormalization;
     dispatch["LRN"] = &ONNXImporter2::parseLRN;
     dispatch["InstanceNormalization"] = &ONNXImporter2::parseInstanceNormalization;
     dispatch["BatchNormalization"] = &ONNXImporter2::parseBatchNormalization;
diff --git a/modules/dnn/test/test_onnx_conformance_layer_filter__openvino.inl.hpp b/modules/dnn/test/test_onnx_conformance_layer_filter__openvino.inl.hpp
index b9fcad03f0..edefdccbbe 100644
--- a/modules/dnn/test/test_onnx_conformance_layer_filter__openvino.inl.hpp
+++ b/modules/dnn/test/test_onnx_conformance_layer_filter__openvino.inl.hpp
@@ -1314,6 +1314,8 @@ CASE(test_layer_normalization_default_axis_expanded)
     SKIP;
 CASE(test_layer_normalization_default_axis_expanded_ver18)
     SKIP;
+CASE(test_lpnormalization_default)
+    SKIP;
 CASE(test_leakyrelu)
     // no filter
 CASE(test_leakyrelu_default)
diff --git a/modules/dnn/test/test_onnx_conformance_layer_filter_opencv_classic_denylist.inl.hpp b/modules/dnn/test/test_onnx_conformance_layer_filter_opencv_classic_denylist.inl.hpp
index de2ffc9bf5..5bcf9ec6f4 100644
--- a/modules/dnn/test/test_onnx_conformance_layer_filter_opencv_classic_denylist.inl.hpp
+++ b/modules/dnn/test/test_onnx_conformance_layer_filter_opencv_classic_denylist.inl.hpp
@@ -252,6 +252,7 @@
 "test_less_uint32",
 "test_less_uint64",
 "test_less_uint8",
+"test_lpnormalization_default",
 "test_resize_upsample_scales_nearest_axes_2_3",
 "test_resize_upsample_sizes_nearest_axes_2_3",
 "test_split_equal_parts_2d_opset13",
diff --git a/modules/dnn/test/test_onnx_conformance_layer_parser_denylist.inl.hpp b/modules/dnn/test/test_onnx_conformance_layer_parser_denylist.inl.hpp
index 8380828892..d7a8ed1ff2 100644
--- a/modules/dnn/test/test_onnx_conformance_layer_parser_denylist.inl.hpp
+++ b/modules/dnn/test/test_onnx_conformance_layer_parser_denylist.inl.hpp
@@ -330,7 +330,6 @@
 "test_l2normalization_axis_1",
 "test_loop13_seq",  // Loop with tensor sequences output, not yet supported in OpenCV
 "test_loop16_seq_none",  // Loop with optional tensor sequences, not yet supported in OpenCV
-"test_lpnormalization_default",
 "test_lppool_1d_default",
 "test_lppool_2d_default",
 "test_lppool_2d_dilations",