diff --git a/datafusion/common/src/cast.rs b/datafusion/common/src/cast.rs
index 93bb82b6b795..15c95056ccde 100644
--- a/datafusion/common/src/cast.rs
+++ b/datafusion/common/src/cast.rs
@@ -37,7 +37,8 @@ use arrow::{
     datatypes::{ArrowDictionaryKeyType, ArrowPrimitiveType},
 };
 use arrow_array::{
-    BinaryViewArray, Float16Array, Int16Array, Int8Array, StringViewArray, UInt16Array,
+    BinaryViewArray, Float16Array, Int16Array, Int8Array, LargeStringArray,
+    StringViewArray, UInt16Array,
 };
 
 // Downcast ArrayRef to Date32Array
@@ -130,6 +131,11 @@ pub fn as_string_view_array(array: &dyn Array) -> Result<&StringViewArray> {
     Ok(downcast_value!(array, StringViewArray))
 }
 
+// Downcast ArrayRef to LargeStringArray
+pub fn as_large_string_array(array: &dyn Array) -> Result<&LargeStringArray> {
+    Ok(downcast_value!(array, LargeStringArray))
+}
+
 // Downcast ArrayRef to BooleanArray
 pub fn as_boolean_array(array: &dyn Array) -> Result<&BooleanArray> {
     Ok(downcast_value!(array, BooleanArray))