diff --git a/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td b/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
--- a/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
+++ b/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
@@ -780,6 +780,17 @@
   let cppNamespace = "::mlir::LLVM";
 }
 
+def UnnamedAddrNone : LLVM_EnumAttrCase<"None", "none", "None", 0>;
+def UnnamedAddrLocal : LLVM_EnumAttrCase<"Local", "local", "Local", 1>;
+def UnnamedAddrGlobal : LLVM_EnumAttrCase<"Global", "global", "Global", 2>;
+
+def UnnamedAddr : LLVM_EnumAttr<
+    "UnnamedAddr",
+    "::llvm::GlobalValue::UnnamedAddr",
+    "LLVM GlobalValue UnnamedAddr",
+    [UnnamedAddrNone, UnnamedAddrLocal, UnnamedAddrGlobal]> {
+  let cppNamespace = "::mlir::LLVM";
+}
 
 def LLVM_AddressOfOp : LLVM_Op<"mlir.addressof"> {
   let arguments = (ins FlatSymbolRefAttr:$global_name);
@@ -896,7 +907,8 @@
     StrAttr:$sym_name,
     Linkage:$linkage,
     OptionalAttr<AnyAttr>:$value,
-    DefaultValuedAttr<Confined<I32Attr, [IntNonNegative]>, "0">:$addr_space
+    DefaultValuedAttr<Confined<I32Attr, [IntNonNegative]>, "0">:$addr_space,
+    OptionalAttr<UnnamedAddr>:$unnamed_addr
   );
   let summary = "LLVM dialect global.";
   let description = [{
diff --git a/mlir/lib/Target/LLVMIR/ConvertFromLLVMIR.cpp b/mlir/lib/Target/LLVMIR/ConvertFromLLVMIR.cpp
--- a/mlir/lib/Target/LLVMIR/ConvertFromLLVMIR.cpp
+++ b/mlir/lib/Target/LLVMIR/ConvertFromLLVMIR.cpp
@@ -487,6 +487,9 @@
       return nullptr;
     b.create<ReturnOp>(op.getLoc(), ArrayRef<Value>({v}));
   }
+  if (GV->hasAtLeastLocalUnnamedAddr())
+    op.unnamed_addrAttr(UnnamedAddrAttr::get(
+        context, convertUnnamedAddrFromLLVM(GV->getUnnamedAddr())));
   return globals[GV] = op;
 }
 
diff --git a/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp b/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
--- a/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
+++ b/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
@@ -407,6 +407,10 @@
         op.sym_name(),
         /*InsertBefore=*/nullptr, llvm::GlobalValue::NotThreadLocal, addrSpace);
 
+    if (op.unnamed_addr().hasValue()) {
+      var->setUnnamedAddr(convertUnnamedAddrToLLVM(*op.unnamed_addr()));
+    }
+
     globalsMapping.try_emplace(op, var);
   }
 
diff --git a/mlir/test/Dialect/LLVMIR/global.mlir b/mlir/test/Dialect/LLVMIR/global.mlir
--- a/mlir/test/Dialect/LLVMIR/global.mlir
+++ b/mlir/test/Dialect/LLVMIR/global.mlir
@@ -63,6 +63,9 @@
   llvm.return
 }
 
+// CHECK: llvm.mlir.global private constant @foo(42 : i64) {unnamed_addr = 0 : i64} : i64
+llvm.mlir.global private constant @foo(42 : i64) {unnamed_addr = 0 : i64} : i64
+
 // -----
 
 // expected-error @+1 {{requires string attribute 'sym_name'}}