diff --git a/extension/module/CMakeLists.txt b/extension/module/CMakeLists.txt
index d887d873ab7..8fb2be9a677 100644
--- a/extension/module/CMakeLists.txt
+++ b/extension/module/CMakeLists.txt
@@ -29,7 +29,7 @@ else()
 endif()
 target_link_libraries(
   extension_module PRIVATE executorch_core extension_data_loader
-                           extension_flat_tensor
+                           extension_flat_tensor extension_named_data_map
 )
 target_include_directories(
   extension_module PUBLIC ${_common_include_directories}
@@ -42,8 +42,9 @@ target_compile_options(
 # after cleaning up CMake targets.
 add_library(extension_module_static STATIC ${_extension_module__srcs})
 target_link_libraries(
-  extension_module_static PRIVATE executorch_core extension_data_loader
-                                  extension_flat_tensor
+  extension_module_static
+  PRIVATE executorch_core extension_data_loader extension_flat_tensor
+          extension_named_data_map
 )
 target_include_directories(
   extension_module_static PUBLIC ${_common_include_directories}
diff --git a/extension/module/module.cpp b/extension/module/module.cpp
index 4b1c30ae6b5..9de77bcbc79 100644
--- a/extension/module/module.cpp
+++ b/extension/module/module.cpp
@@ -12,6 +12,7 @@
 #include <executorch/extension/data_loader/mmap_data_loader.h>
 #include <executorch/extension/flat_tensor/flat_tensor_data_map.h>
 #include <executorch/extension/memory_allocator/malloc_memory_allocator.h>
+#include <executorch/extension/named_data_map/merged_data_map.h>
 #include <executorch/runtime/platform/runtime.h>
 
 /**
@@ -38,6 +39,7 @@ namespace executorch {
 namespace extension {
 namespace ET_MODULE_NAMESPACE {
 
+using ET_MERGED_DATA_MAP_NAMESPACE::MergedDataMap;
 using ET_RUNTIME_NAMESPACE::MethodMeta;
 using ET_RUNTIME_NAMESPACE::Program;
 
@@ -155,10 +157,6 @@ runtime::Error Module::load(const Program::Verification verification) {
       data_loader_ = ET_UNWRAP(make_data_loader(file_path_, load_mode_));
     }
     if (data_files_.size() > 0) {
-      ET_CHECK_OR_RETURN_ERROR(
-          data_files_.size() == 1,
-          NotImplemented,
-          "Multiple named data map paths are not supported yet.");
       for (const auto& data_file : data_files_) {
         data_map_loaders_.push_back(
             ET_UNWRAP(make_data_loader(data_file, load_mode_)));
@@ -166,13 +164,20 @@ runtime::Error Module::load(const Program::Verification verification) {
     }
 
     if (data_map_loaders_.size() > 0) {
-      ET_CHECK_OR_RETURN_ERROR(
-          data_map_loaders_.size() == 1 && merged_data_map_ == nullptr,
-          NotImplemented,
-          "Multiple named data map loaders are not supported yet.");
-      // TODO(lfq): support multiple named data map loaders.
-      merged_data_map_ =
-          ET_UNWRAP_UNIQUE(FlatTensorDataMap::load(data_map_loaders_[0].get()));
+      for (auto i = 0; i < data_map_loaders_.size(); ++i) {
+        named_data_maps_.push_back(ET_UNWRAP_UNIQUE(
+            FlatTensorDataMap::load(data_map_loaders_[i].get())));
+      }
+
+      // Extract raw pointers from unique_ptrs to pass to MergedDataMap::load()
+      std::vector<const NamedDataMap*> raw_data_maps;
+      raw_data_maps.reserve(named_data_maps_.size());
+      for (const auto& data_map : named_data_maps_) {
+        raw_data_maps.push_back(data_map.get());
+      }
+      merged_data_map_ = ET_UNWRAP_UNIQUE(
+          MergedDataMap::load(runtime::Span<const NamedDataMap*>(
+              raw_data_maps.data(), raw_data_maps.size())));
     }
 
     auto program =
diff --git a/extension/module/targets.bzl b/extension/module/targets.bzl
index 3e449da5e14..0db909ce053 100644
--- a/extension/module/targets.bzl
+++ b/extension/module/targets.bzl
@@ -26,6 +26,7 @@ def define_common_targets():
                 "//executorch/extension/data_loader:file_data_loader",
                 "//executorch/extension/data_loader:mmap_data_loader",
                 "//executorch/extension/flat_tensor:flat_tensor_data_map" + aten_suffix,
+                "//executorch/extension/named_data_map:merged_data_map" + aten_suffix,
             ],
             exported_deps = [
                 "//executorch/runtime/executor:program_no_prim_ops" + aten_suffix,
diff --git a/extension/module/test/CMakeLists.txt b/extension/module/test/CMakeLists.txt
index 1c4358dd73e..54ace17557f 100644
--- a/extension/module/test/CMakeLists.txt
+++ b/extension/module/test/CMakeLists.txt
@@ -23,11 +23,14 @@ add_custom_command(
   OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/ModuleAdd.pte"
          "${CMAKE_CURRENT_BINARY_DIR}/ModuleAddMulProgram.pte"
          "${CMAKE_CURRENT_BINARY_DIR}/ModuleAddMulProgram.ptd"
+         "${CMAKE_CURRENT_BINARY_DIR}/ModuleLinearProgram.pte"
+         "${CMAKE_CURRENT_BINARY_DIR}/ModuleLinearProgram.ptd"
   COMMAND ${PYTHON_EXECUTABLE} -m test.models.export_program --modules
           "ModuleAdd" --outdir "${CMAKE_CURRENT_BINARY_DIR}"
   COMMAND
-    ${PYTHON_EXECUTABLE} -m test.models.export_program --modules "ModuleAddMul"
-    --external-constants --outdir "${CMAKE_CURRENT_BINARY_DIR}"
+    ${PYTHON_EXECUTABLE} -m test.models.export_program --modules
+    "ModuleAddMul,ModuleLinear" --external-constants --outdir
+    "${CMAKE_CURRENT_BINARY_DIR}"
   WORKING_DIRECTORY ${EXECUTORCH_ROOT}
 )
 
@@ -36,12 +39,16 @@ add_custom_target(
   DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/ModuleAdd.pte"
           "${CMAKE_CURRENT_BINARY_DIR}/ModuleAddMulProgram.pte"
           "${CMAKE_CURRENT_BINARY_DIR}/ModuleAddMulProgram.ptd"
+          "${CMAKE_CURRENT_BINARY_DIR}/ModuleLinearProgram.pte"
+          "${CMAKE_CURRENT_BINARY_DIR}/ModuleLinearProgram.ptd"
 )
 
 set(test_env
     "ET_MODULE_ADD_PATH=${CMAKE_CURRENT_BINARY_DIR}/ModuleAdd.pte"
     "ET_MODULE_ADD_MUL_PROGRAM_PATH=${CMAKE_CURRENT_BINARY_DIR}/ModuleAddMulProgram.pte"
     "ET_MODULE_ADD_MUL_DATA_PATH=${CMAKE_CURRENT_BINARY_DIR}/ModuleAddMulProgram.ptd"
+    "ET_MODULE_LINEAR_PROGRAM_PATH=${CMAKE_CURRENT_BINARY_DIR}/ModuleLinearProgram.pte"
+    "ET_MODULE_LINEAR_DATA_PATH=${CMAKE_CURRENT_BINARY_DIR}/ModuleLinearProgram.ptd"
 )
 
 et_cxx_test(
diff --git a/extension/module/test/module_test.cpp b/extension/module/test/module_test.cpp
index 6f7e8a44558..27332503cad 100644
--- a/extension/module/test/module_test.cpp
+++ b/extension/module/test/module_test.cpp
@@ -26,11 +26,15 @@ class ModuleTest : public ::testing::Test {
     model_path_ = std::getenv("ET_MODULE_ADD_PATH");
     add_mul_path_ = std::getenv("ET_MODULE_ADD_MUL_PROGRAM_PATH");
     add_mul_data_path_ = std::getenv("ET_MODULE_ADD_MUL_DATA_PATH");
+    linear_path_ = std::getenv("ET_MODULE_LINEAR_PROGRAM_PATH");
+    linear_data_path_ = std::getenv("ET_MODULE_LINEAR_DATA_PATH");
   }
 
   static inline std::string model_path_;
   static inline std::string add_mul_path_;
   static inline std::string add_mul_data_path_;
+  static inline std::string linear_path_;
+  static inline std::string linear_data_path_;
 };
 
 TEST_F(ModuleTest, TestLoad) {
@@ -532,16 +536,21 @@ TEST_F(ModuleTest, TestPTD) {
 }
 
 TEST_F(ModuleTest, TestPTD_Multiple) {
-  std::vector<std::string> data_files = {add_mul_data_path_};
-  Module module(add_mul_path_, data_files);
-
-  ASSERT_EQ(module.load_method("forward"), Error::Ok);
+  std::vector<std::string> data_files = {add_mul_data_path_, linear_data_path_};
 
+  // Create module with add mul.
+  Module module_add_mul(add_mul_path_, data_files);
+  ASSERT_EQ(module_add_mul.load_method("forward"), Error::Ok);
   auto tensor = make_tensor_ptr({2, 2}, {2.f, 3.f, 4.f, 2.f});
-  ASSERT_EQ(module.forward(tensor).error(), Error::Ok);
+  ASSERT_EQ(module_add_mul.forward(tensor).error(), Error::Ok);
 
   // Confirm that the data_file is not std::move'd away.
   ASSERT_EQ(std::strcmp(data_files[0].c_str(), add_mul_data_path_.c_str()), 0);
+  ASSERT_EQ(std::strcmp(data_files[1].c_str(), linear_data_path_.c_str()), 0);
 
-  // TODO(lfq): add test when merge capability is supported.
+  // Create module with linear.
+  Module module_linear(linear_path_, data_files);
+  ASSERT_EQ(module_linear.load_method("forward"), Error::Ok);
+  auto tensor2 = make_tensor_ptr({3}, {2.f, 3.f, 4.f});
+  ASSERT_EQ(module_linear.forward(tensor2).error(), Error::Ok);
 }
diff --git a/extension/module/test/targets.bzl b/extension/module/test/targets.bzl
index d1aa73f6789..da7f1cc91bd 100644
--- a/extension/module/test/targets.bzl
+++ b/extension/module/test/targets.bzl
@@ -19,6 +19,8 @@ def define_common_targets(is_fbcode=False):
             "ET_MODULE_ADD_PATH": "$(location fbcode//executorch/test/models:exported_programs[ModuleAdd.pte])",
             "ET_MODULE_ADD_MUL_PROGRAM_PATH": "$(location fbcode//executorch/test/models:exported_program_and_data[ModuleAddMul.pte])",
             "ET_MODULE_ADD_MUL_DATA_PATH": "$(location fbcode//executorch/test/models:exported_program_and_data[ModuleAddMul.ptd])",
+            "ET_MODULE_LINEAR_PROGRAM_PATH": "$(location fbcode//executorch/test/models:exported_program_and_data[ModuleLinear.pte])",
+            "ET_MODULE_LINEAR_DATA_PATH": "$(location fbcode//executorch/test/models:exported_program_and_data[ModuleLinear.ptd])",
             "ET_MODULE_SHARED_STATE": "$(location fbcode//executorch/test/models:exported_programs[ModuleSharedState.pte])",
         }
 
diff --git a/extension/named_data_map/merged_data_map.cpp b/extension/named_data_map/merged_data_map.cpp
index b42701c7587..2d1bb7d6158 100644
--- a/extension/named_data_map/merged_data_map.cpp
+++ b/extension/named_data_map/merged_data_map.cpp
@@ -21,7 +21,7 @@ using executorch::runtime::Result;
 using executorch::runtime::Span;
 
 namespace executorch::extension {
-
+namespace ET_MERGED_DATA_MAP_NAMESPACE {
 /*static*/ Result<MergedDataMap> MergedDataMap::load(
     Span<const NamedDataMap*> named_data_maps) {
   std::vector<const NamedDataMap*> valid_data_maps;
@@ -38,7 +38,7 @@ namespace executorch::extension {
 
   // Check for duplicate keys.
   std::unordered_map<std::string, uint32_t> key_to_map_index;
-  for (auto i : c10::irange(valid_data_maps.size())) {
+  for (const uint32_t i : c10::irange(valid_data_maps.size())) {
     const auto cur_map = valid_data_maps[i];
     uint32_t num_keys = cur_map->get_num_keys().get();
     for (auto j : c10::irange(num_keys)) {
@@ -47,7 +47,7 @@ namespace executorch::extension {
       ET_CHECK_OR_RETURN_ERROR(
           inserted,
           InvalidArgument,
-          "Duplicate key %s in named data maps at index %u and %lu",
+          "Duplicate key %s in named data maps at index %u and %" PRIu32,
           cur_key,
           it->second,
           i);
@@ -114,4 +114,6 @@ ET_NODISCARD Result<const char*> MergedDataMap::get_key(uint32_t index) const {
   // Shouldn't reach here.
   return Error::Internal;
 }
+
+} // namespace ET_MERGED_DATA_MAP_NAMESPACE
 } // namespace executorch::extension
diff --git a/extension/named_data_map/merged_data_map.h b/extension/named_data_map/merged_data_map.h
index 13415c0b59e..42490ec3d58 100644
--- a/extension/named_data_map/merged_data_map.h
+++ b/extension/named_data_map/merged_data_map.h
@@ -13,7 +13,15 @@
 #include <unordered_map>
 #include <vector>
 
+#ifdef USE_ATEN_LIB
+#define ET_MERGED_DATA_MAP_NAMESPACE merged_data_map::aten
+#else // !USE_ATEN_LIB
+#define ET_MERGED_DATA_MAP_NAMESPACE merged_data_map
+#endif // USE_ATEN_LIB
+
 namespace executorch::extension {
+
+namespace ET_MERGED_DATA_MAP_NAMESPACE {
 /**
  * A NamedDataMap implementation that wraps other NamedDataMaps.
  */
@@ -103,4 +111,5 @@ class MergedDataMap final
   std::unordered_map<std::string, uint32_t> key_to_map_index_;
 };
 
+} // namespace ET_MERGED_DATA_MAP_NAMESPACE
 } // namespace executorch::extension
diff --git a/extension/named_data_map/test/merged_data_map_test.cpp b/extension/named_data_map/test/merged_data_map_test.cpp
index 4086855f439..ccfaaa0ec0e 100644
--- a/extension/named_data_map/test/merged_data_map_test.cpp
+++ b/extension/named_data_map/test/merged_data_map_test.cpp
@@ -23,7 +23,7 @@
 using namespace ::testing;
 using executorch::extension::FileDataLoader;
 using executorch::extension::FlatTensorDataMap;
-using executorch::extension::MergedDataMap;
+using executorch::extension::merged_data_map::MergedDataMap;
 using executorch::runtime::DataLoader;
 using executorch::runtime::Error;
 using executorch::runtime::NamedDataMap;
diff --git a/scripts/build_apple_frameworks.sh b/scripts/build_apple_frameworks.sh
index 8ce2d68bab8..63fa4cf4545 100755
--- a/scripts/build_apple_frameworks.sh
+++ b/scripts/build_apple_frameworks.sh
@@ -31,6 +31,7 @@ libextension_apple.a,\
 libextension_data_loader.a,\
 libextension_flat_tensor.a,\
 libextension_module.a,\
+libextension_named_data_map.a,\
 libextension_tensor.a,\
 :${FRAMEWORK_EXECUTORCH_HEADERS_DIR}:${FRAMEWORK_EXECUTORCH_MODULE_NAME}"