diff --git a/extensions/iceberg/src/main/java/io/deephaven/iceberg/util/IcebergCatalogAdapter.java b/extensions/iceberg/src/main/java/io/deephaven/iceberg/util/IcebergCatalogAdapter.java
index 486bcf18655..4955ca9223b 100644
--- a/extensions/iceberg/src/main/java/io/deephaven/iceberg/util/IcebergCatalogAdapter.java
+++ b/extensions/iceberg/src/main/java/io/deephaven/iceberg/util/IcebergCatalogAdapter.java
@@ -772,4 +772,12 @@ private Table readTableInternal(
     public Catalog catalog() {
         return catalog;
     }
+
+    /**
+     * Returns the underlying Iceberg {@link FileIO} used by this adapter.
+     */
+    @SuppressWarnings("unused")
+    public FileIO fileIO() {
+        return fileIO;
+    }
 }