diff --git a/mlir/include/mlir-c/IR.h b/mlir/include/mlir-c/IR.h
--- a/mlir/include/mlir-c/IR.h
+++ b/mlir/include/mlir-c/IR.h
@@ -517,6 +517,13 @@
                                                          MlirBlock reference,
                                                          MlirBlock block);
 
+/// Returns first region attached to the operation.
+MLIR_CAPI_EXPORTED MlirRegion mlirOperationGetFirstRegion(MlirOperation op);
+
+/// Returns the region immediately following the given region in its parent
+/// operation.
+MLIR_CAPI_EXPORTED MlirRegion mlirRegionGetNextInOperation(MlirRegion region);
+
 //===----------------------------------------------------------------------===//
 // Block API.
 //===----------------------------------------------------------------------===//
diff --git a/mlir/lib/CAPI/IR/IR.cpp b/mlir/lib/CAPI/IR/IR.cpp
--- a/mlir/lib/CAPI/IR/IR.cpp
+++ b/mlir/lib/CAPI/IR/IR.cpp
@@ -379,6 +379,22 @@
   return wrap(&unwrap(op)->getRegion(static_cast<unsigned>(pos)));
 }
 
+MlirRegion mlirOperationGetFirstRegion(MlirOperation op) {
+  Operation *cppOp = unwrap(op);
+  if (cppOp->getNumRegions() == 0)
+    return wrap(static_cast<Region *>(nullptr));
+  return wrap(&cppOp->getRegion(0));
+}
+
+MlirRegion mlirRegionGetNextInOperation(MlirRegion region) {
+  Region *cppRegion = unwrap(region);
+  Operation *parent = cppRegion->getParentOp();
+  intptr_t next = cppRegion->getRegionNumber() + 1;
+  if (parent->getNumRegions() > next)
+    return wrap(&parent->getRegion(next));
+  return wrap(static_cast<Region *>(nullptr));
+}
+
 MlirOperation mlirOperationGetNextInBlock(MlirOperation op) {
   return wrap(unwrap(op)->getNextNode());
 }
diff --git a/mlir/test/CAPI/ir.c b/mlir/test/CAPI/ir.c
--- a/mlir/test/CAPI/ir.c
+++ b/mlir/test/CAPI/ir.c
@@ -226,8 +226,8 @@
     ++stats->numOpResults;
   }
 
-  for (unsigned i = 0; i < numRegions; ++i) {
-    MlirRegion region = mlirOperationGetRegion(operation, i);
+  MlirRegion region = mlirOperationGetFirstRegion(operation);
+  while (!mlirRegionIsNull(region)) {
     for (MlirBlock block = mlirRegionGetFirstBlock(region);
          !mlirBlockIsNull(block); block = mlirBlockGetNextInRegion(block)) {
       ++stats->numBlocks;
@@ -255,6 +255,7 @@
         head->next = node;
       }
     }
+    region = mlirRegionGetNextInOperation(region);
   }
   return 0;
 }