diff --git a/mlir/include/mlir/Dialect/LLVMIR/LLVMAttrDefs.td b/mlir/include/mlir/Dialect/LLVMIR/LLVMAttrDefs.td
--- a/mlir/include/mlir/Dialect/LLVMIR/LLVMAttrDefs.td
+++ b/mlir/include/mlir/Dialect/LLVMIR/LLVMAttrDefs.td
@@ -469,6 +469,21 @@
   let assemblyFormat = "`<` struct(params) `>`";
 }
 
+//===----------------------------------------------------------------------===//
+// DINamespaceAttr
+//===----------------------------------------------------------------------===//
+
+def LLVM_DINamespaceAttr : LLVM_Attr<"DINamespace", "di_namespace",
+                                      /*traits=*/[], "DIScopeAttr"> {
+  let parameters = (ins
+    "StringAttr":$name,
+    OptionalParameter<"DIScopeAttr">:$scope,
+    "bool":$exportSymbols
+  );
+
+  let assemblyFormat = "`<` struct(params) `>`";
+}
+
 //===----------------------------------------------------------------------===//
 // DISubrangeAttr
 //===----------------------------------------------------------------------===//
diff --git a/mlir/lib/Dialect/LLVMIR/IR/LLVMAttrs.cpp b/mlir/lib/Dialect/LLVMIR/IR/LLVMAttrs.cpp
--- a/mlir/lib/Dialect/LLVMIR/IR/LLVMAttrs.cpp
+++ b/mlir/lib/Dialect/LLVMIR/IR/LLVMAttrs.cpp
@@ -42,10 +42,10 @@
 //===----------------------------------------------------------------------===//
 
 bool DINodeAttr::classof(Attribute attr) {
-  return llvm::isa<DINullTypeAttr, DIBasicTypeAttr, DICompileUnitAttr,
-                   DICompositeTypeAttr, DIDerivedTypeAttr, DIFileAttr,
-                   DILexicalBlockAttr, DILexicalBlockFileAttr,
-                   DILocalVariableAttr, DISubprogramAttr, DISubrangeAttr,
+  return llvm::isa<DIBasicTypeAttr, DICompileUnitAttr, DICompositeTypeAttr,
+                   DIDerivedTypeAttr, DIFileAttr, DILexicalBlockAttr,
+                   DILexicalBlockFileAttr, DILocalVariableAttr, DINamespaceAttr,
+                   DINullTypeAttr, DISubprogramAttr, DISubrangeAttr,
                    DISubroutineTypeAttr>(attr);
 }
 
@@ -63,7 +63,7 @@
 //===----------------------------------------------------------------------===//
 
 bool DILocalScopeAttr::classof(Attribute attr) {
-  return llvm::isa<DILexicalBlockAttr, DISubprogramAttr>(attr);
+  return llvm::isa<DILexicalBlockAttr, DINamespaceAttr, DISubprogramAttr>(attr);
 }
 
 //===----------------------------------------------------------------------===//
diff --git a/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp b/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
--- a/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
+++ b/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
@@ -2800,17 +2800,17 @@
 
   AliasResult getAlias(Attribute attr, raw_ostream &os) const override {
     return TypeSwitch<Attribute, AliasResult>(attr)
-        .Case<DINullTypeAttr, DIBasicTypeAttr, DICompileUnitAttr,
-              DICompositeTypeAttr, DIDerivedTypeAttr, DIFileAttr,
-              DILexicalBlockAttr, DILexicalBlockFileAttr, DILocalVariableAttr,
-              DISubprogramAttr, DISubroutineTypeAttr, LoopAnnotationAttr,
-              LoopVectorizeAttr, LoopInterleaveAttr, LoopUnrollAttr,
-              LoopUnrollAndJamAttr, LoopLICMAttr, LoopDistributeAttr,
-              LoopPipelineAttr, LoopPeeledAttr, LoopUnswitchAttr>(
-            [&](auto attr) {
-              os << decltype(attr)::getMnemonic();
-              return AliasResult::OverridableAlias;
-            })
+        .Case<DIBasicTypeAttr, DICompileUnitAttr, DICompositeTypeAttr,
+              DIDerivedTypeAttr, DIFileAttr, DILexicalBlockAttr,
+              DILexicalBlockFileAttr, DILocalVariableAttr, DINamespaceAttr,
+              DINullTypeAttr, DISubprogramAttr, DISubroutineTypeAttr,
+              LoopAnnotationAttr, LoopVectorizeAttr, LoopInterleaveAttr,
+              LoopUnrollAttr, LoopUnrollAndJamAttr, LoopLICMAttr,
+              LoopDistributeAttr, LoopPipelineAttr, LoopPeeledAttr,
+              LoopUnswitchAttr>([&](auto attr) {
+          os << decltype(attr)::getMnemonic();
+          return AliasResult::OverridableAlias;
+        })
         .Default([](Attribute) { return AliasResult::NoAlias; });
   }
 };
diff --git a/mlir/lib/Target/LLVMIR/DebugImporter.h b/mlir/lib/Target/LLVMIR/DebugImporter.h
--- a/mlir/lib/Target/LLVMIR/DebugImporter.h
+++ b/mlir/lib/Target/LLVMIR/DebugImporter.h
@@ -62,6 +62,7 @@
   DILocalVariableAttr translateImpl(llvm::DILocalVariable *node);
   DIScopeAttr translateImpl(llvm::DIScope *node);
   DISubprogramAttr translateImpl(llvm::DISubprogram *node);
+  DINamespaceAttr translateImpl(llvm::DINamespace *node);
   DISubrangeAttr translateImpl(llvm::DISubrange *node);
   DISubroutineTypeAttr translateImpl(llvm::DISubroutineType *node);
   DITypeAttr translateImpl(llvm::DIType *node);
diff --git a/mlir/lib/Target/LLVMIR/DebugImporter.cpp b/mlir/lib/Target/LLVMIR/DebugImporter.cpp
--- a/mlir/lib/Target/LLVMIR/DebugImporter.cpp
+++ b/mlir/lib/Target/LLVMIR/DebugImporter.cpp
@@ -113,6 +113,12 @@
   return cast<DIScopeAttr>(translate(static_cast<llvm::DINode *>(node)));
 }
 
+DINamespaceAttr DebugImporter::translateImpl(llvm::DINamespace *node) {
+  return DINamespaceAttr::get(
+      context, StringAttr::get(context, node->getName()),
+      translate(node->getScope()), node->getExportSymbols());
+}
+
 DISubprogramAttr DebugImporter::translateImpl(llvm::DISubprogram *node) {
   std::optional<DISubprogramFlags> subprogramFlags =
       symbolizeDISubprogramFlags(node->getSubprogram()->getSPFlags());
@@ -205,6 +211,8 @@
       return translateImpl(casted);
     if (auto *casted = dyn_cast<llvm::DISubprogram>(node))
       return translateImpl(casted);
+    if (auto *casted = dyn_cast<llvm::DINamespace>(node))
+      return translateImpl(casted);
     if (auto *casted = dyn_cast<llvm::DISubrange>(node))
       return translateImpl(casted);
     if (auto *casted = dyn_cast<llvm::DISubroutineType>(node))
diff --git a/mlir/lib/Target/LLVMIR/DebugTranslation.h b/mlir/lib/Target/LLVMIR/DebugTranslation.h
--- a/mlir/lib/Target/LLVMIR/DebugTranslation.h
+++ b/mlir/lib/Target/LLVMIR/DebugTranslation.h
@@ -73,6 +73,7 @@
   llvm::DILocalVariable *translateImpl(DILocalVariableAttr attr);
   llvm::DIScope *translateImpl(DIScopeAttr attr);
   llvm::DISubprogram *translateImpl(DISubprogramAttr attr);
+  llvm::DINamespace *translateImpl(DINamespaceAttr attr);
   llvm::DISubrange *translateImpl(DISubrangeAttr attr);
   llvm::DISubroutineType *translateImpl(DISubroutineTypeAttr attr);
   llvm::DIType *translateImpl(DITypeAttr attr);
diff --git a/mlir/lib/Target/LLVMIR/DebugTranslation.cpp b/mlir/lib/Target/LLVMIR/DebugTranslation.cpp
--- a/mlir/lib/Target/LLVMIR/DebugTranslation.cpp
+++ b/mlir/lib/Target/LLVMIR/DebugTranslation.cpp
@@ -198,6 +198,11 @@
       translate(attr.getCompileUnit()));
 }
 
+llvm::DINamespace *DebugTranslation::translateImpl(DINamespaceAttr attr) {
+  return llvm::DINamespace::get(llvmCtx, translate(attr.getScope()),
+                                attr.getName(), attr.getExportSymbols());
+}
+
 llvm::DISubrange *DebugTranslation::translateImpl(DISubrangeAttr attr) {
   auto getMetadataOrNull = [&](IntegerAttr attr) -> llvm::Metadata * {
     if (!attr)
@@ -235,10 +240,11 @@
 
   llvm::DINode *node =
       TypeSwitch<DINodeAttr, llvm::DINode *>(attr)
-          .Case<DINullTypeAttr, DIBasicTypeAttr, DICompileUnitAttr,
-                DICompositeTypeAttr, DIDerivedTypeAttr, DIFileAttr,
-                DILexicalBlockAttr, DILexicalBlockFileAttr, DILocalVariableAttr,
-                DISubprogramAttr, DISubrangeAttr, DISubroutineTypeAttr>(
+          .Case<DIBasicTypeAttr, DICompileUnitAttr, DICompositeTypeAttr,
+                DIDerivedTypeAttr, DIFileAttr, DILexicalBlockAttr,
+                DILexicalBlockFileAttr, DILocalVariableAttr, DINamespaceAttr,
+                DINullTypeAttr, DISubprogramAttr, DISubrangeAttr,
+                DISubroutineTypeAttr>(
               [&](auto attr) { return translateImpl(attr); });
   attrToNode.insert({attr, node});
   return node;
diff --git a/mlir/test/Dialect/LLVMIR/debuginfo.mlir b/mlir/test/Dialect/LLVMIR/debuginfo.mlir
--- a/mlir/test/Dialect/LLVMIR/debuginfo.mlir
+++ b/mlir/test/Dialect/LLVMIR/debuginfo.mlir
@@ -50,9 +50,19 @@
   elements = #llvm.di_subrange<count = 4>
 >
 
-// CHECK-DAG: #[[COMP2:.*]] = #llvm.di_composite_type<tag = DW_TAG_class_type, name = "class_name", file = #[[FILE]], scope = #[[FILE]], flags = "TypePassByReference|NonTrivial">
+// CHECK-DAG: #[[TOPLEVEL:.*]] = #llvm.di_namespace<name = "toplevel", exportSymbols = true>
+#toplevel_namespace = #llvm.di_namespace<
+  name = "toplevel", exportSymbols = true
+>
+
+// CHECK-DAG: #[[NESTED:.*]] = #llvm.di_namespace<name = "nested", scope = #[[TOPLEVEL]], exportSymbols = false>
+#nested_namespace = #llvm.di_namespace<
+  name = "nested", scope = #toplevel_namespace, exportSymbols = false
+>
+
+// CHECK-DAG: #[[COMP2:.*]] = #llvm.di_composite_type<tag = DW_TAG_class_type, name = "class_name", file = #[[FILE]], scope = #[[NESTED]], flags = "TypePassByReference|NonTrivial">
 #comp2 = #llvm.di_composite_type<
-  tag = DW_TAG_class_type, name = "class_name", file = #file, scope = #file,
+  tag = DW_TAG_class_type, name = "class_name", file = #file, scope = #nested_namespace,
   flags = "TypePassByReference|NonTrivial"
 >
 
diff --git a/mlir/test/Target/LLVMIR/Import/debug-info.ll b/mlir/test/Target/LLVMIR/Import/debug-info.ll
--- a/mlir/test/Target/LLVMIR/Import/debug-info.ll
+++ b/mlir/test/Target/LLVMIR/Import/debug-info.ll
@@ -367,3 +367,25 @@
 !7 = !DILocalVariable(scope: !8, name: "var", file: !2, type: !5);
 !8 = distinct !DISubprogram(name: "dbg_use_before_def", scope: !2, file: !2, spFlags: DISPFlagDefinition, unit: !1)
 !9 = !DILocation(line: 1, column: 2, scope: !8)
+
+; // -----
+
+; CHECK-DAG: #[[NAMESPACE:.+]] = #llvm.di_namespace<name = "std", exportSymbols = false>
+; CHECK-DAG: #[[SUBPROGRAM:.+]] =  #llvm.di_subprogram<compileUnit = #{{.*}}, scope = #[[NAMESPACE]], name = "namespace"
+
+define void @namespace(ptr %arg) {
+  call void @llvm.dbg.value(metadata ptr %arg, metadata !7, metadata !DIExpression()), !dbg !9
+  ret void
+}
+
+declare void @llvm.dbg.value(metadata, metadata, metadata)
+
+!llvm.dbg.cu = !{!1}
+!llvm.module.flags = !{!0}
+!0 = !{i32 2, !"Debug Info Version", i32 3}
+!1 = distinct !DICompileUnit(language: DW_LANG_C, file: !2)
+!2 = !DIFile(filename: "debug-info.ll", directory: "/")
+!7 = !DILocalVariable(scope: !8, name: "var")
+!8 = distinct !DISubprogram(name: "namespace", scope: !10, file: !2, unit: !1);
+!9 = !DILocation(line: 1, column: 2, scope: !8)
+!10 = !DINamespace(name: "std", scope: null)
diff --git a/mlir/test/Target/LLVMIR/llvmir-debug.mlir b/mlir/test/Target/LLVMIR/llvmir-debug.mlir
--- a/mlir/test/Target/LLVMIR/llvmir-debug.mlir
+++ b/mlir/test/Target/LLVMIR/llvmir-debug.mlir
@@ -50,8 +50,14 @@
 >
 #null = #llvm.di_null_type
 #spType0 = #llvm.di_subroutine_type<callingConvention = DW_CC_normal, types = #null, #si64, #ptr, #named, #composite, #vector>
+#toplevel_namespace = #llvm.di_namespace<
+  name = "toplevel", exportSymbols = true
+>
+#nested_namespace = #llvm.di_namespace<
+  name = "nested", scope = #toplevel_namespace, exportSymbols = false
+>
 #sp0 = #llvm.di_subprogram<
-  compileUnit = #cu, scope = #file, name = "func_with_debug", linkageName = "func_with_debug",
+  compileUnit = #cu, scope = #nested_namespace, name = "func_with_debug", linkageName = "func_with_debug",
   file = #file, line = 3, scopeLine = 3, subprogramFlags = "Definition|Optimized", type = #spType0
 >
 #calleeType = #llvm.di_subroutine_type<
@@ -113,7 +119,9 @@
 // CHECK: ![[CU_LOC:.*]] = distinct !DICompileUnit(language: DW_LANG_C, file: ![[CU_FILE_LOC:.*]], producer: "MLIR", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
 // CHECK: ![[CU_FILE_LOC]] = !DIFile(filename: "foo.mlir", directory: "/test/")
 
-// CHECK: ![[FUNC_LOC]] = distinct !DISubprogram(name: "func_with_debug", linkageName: "func_with_debug", scope: ![[CU_FILE_LOC]], file: ![[CU_FILE_LOC]], line: 3, type: ![[FUNC_TYPE:.*]], scopeLine: 3, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: ![[CU_LOC]])
+// CHECK: ![[FUNC_LOC]] = distinct !DISubprogram(name: "func_with_debug", linkageName: "func_with_debug", scope: ![[NESTED_NAMESPACE:.*]], file: ![[CU_FILE_LOC]], line: 3, type: ![[FUNC_TYPE:.*]], scopeLine: 3, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: ![[CU_LOC]])
+// CHECK: ![[NESTED_NAMESPACE]] = !DINamespace(name: "nested", scope: ![[TOPLEVEL_NAMESPACE:.*]])
+// CHECK: ![[TOPLEVEL_NAMESPACE]] = !DINamespace(name: "toplevel", scope: null, exportSymbols: true)
 // CHECK: ![[FUNC_TYPE]] = !DISubroutineType(cc: DW_CC_normal, types: ![[FUNC_ARGS:.*]])
 // CHECK: ![[FUNC_ARGS]] = !{null, ![[ARG_TYPE:.*]], ![[PTR_TYPE:.*]], ![[NAMED_TYPE:.*]], ![[COMPOSITE_TYPE:.*]], ![[VECTOR_TYPE:.*]]}
 // CHECK: ![[ARG_TYPE]] = !DIBasicType(name: "si64")