diff --git a/arrow-csv/src/writer.rs b/arrow-csv/src/writer.rs
index d9331053f3d8..4ec0e1bec517 100644
--- a/arrow-csv/src/writer.rs
+++ b/arrow-csv/src/writer.rs
@@ -185,6 +185,12 @@ impl<W: Write> Writer<W> {
 
         Ok(())
     }
+
+    /// Unwraps this `Writer<W>`, returning the underlying writer.
+    pub fn into_inner(self) -> W {
+        // Safe to call `unwrap` since `write` always flushes the writer.
+        self.writer.into_inner().unwrap()
+    }
 }
 
 /// A CSV writer builder