diff --git a/tests/artifacts/testdata/__init__.py b/tests/artifacts/testdata/__init__.py
index 8b6a7ea43..39895f6f1 100644
--- a/tests/artifacts/testdata/__init__.py
+++ b/tests/artifacts/testdata/__init__.py
@@ -22,6 +22,7 @@
 PARQUET_DATA_DIR = os.path.join(os.path.dirname(__file__), "parquet")
 TWITTER_COMPLAINTS_DATA_JSON = os.path.join(DATA_DIR, "twitter_complaints_small.json")
 TWITTER_COMPLAINTS_DATA_JSONL = os.path.join(DATA_DIR, "twitter_complaints_small.jsonl")
+TWITTER_COMPLAINTS_DATA_ARROW = os.path.join(DATA_DIR, "twitter_complaints_small.arrow")
 TWITTER_COMPLAINTS_DATA_PARQUET = os.path.join(
     PARQUET_DATA_DIR, "twitter_complaints_small.parquet"
 )
@@ -31,6 +32,9 @@
 TWITTER_COMPLAINTS_DATA_INPUT_OUTPUT_JSONL = os.path.join(
     DATA_DIR, "twitter_complaints_input_output.jsonl"
 )
+TWITTER_COMPLAINTS_DATA_INPUT_OUTPUT_ARROW = os.path.join(
+    DATA_DIR, "twitter_complaints_input_output.arrow"
+)
 TWITTER_COMPLAINTS_DATA_INPUT_OUTPUT_PARQUET = os.path.join(
     PARQUET_DATA_DIR, "twitter_complaints_input_output.parquet"
 )
@@ -40,6 +44,9 @@
 TWITTER_COMPLAINTS_TOKENIZED_JSONL = os.path.join(
     DATA_DIR, "twitter_complaints_tokenized_with_maykeye_tinyllama_v0.jsonl"
 )
+TWITTER_COMPLAINTS_TOKENIZED_ARROW = os.path.join(
+    DATA_DIR, "twitter_complaints_tokenized_with_maykeye_tinyllama_v0.arrow"
+)
 TWITTER_COMPLAINTS_TOKENIZED_PARQUET = os.path.join(
     PARQUET_DATA_DIR, "twitter_complaints_tokenized_with_maykeye_tinyllama_v0.parquet"
 )
diff --git a/tests/artifacts/testdata/twitter_complaints_input_output.arrow b/tests/artifacts/testdata/twitter_complaints_input_output.arrow
new file mode 100644
index 000000000..602798d34
Binary files /dev/null and b/tests/artifacts/testdata/twitter_complaints_input_output.arrow differ
diff --git a/tests/artifacts/testdata/twitter_complaints_small.arrow b/tests/artifacts/testdata/twitter_complaints_small.arrow
new file mode 100644
index 000000000..b5bba53e2
Binary files /dev/null and b/tests/artifacts/testdata/twitter_complaints_small.arrow differ
diff --git a/tests/artifacts/testdata/twitter_complaints_tokenized_with_maykeye_tinyllama_v0.arrow b/tests/artifacts/testdata/twitter_complaints_tokenized_with_maykeye_tinyllama_v0.arrow
new file mode 100644
index 000000000..6afd36ddf
Binary files /dev/null and b/tests/artifacts/testdata/twitter_complaints_tokenized_with_maykeye_tinyllama_v0.arrow differ
diff --git a/tests/data/test_data_preprocessing_utils.py b/tests/data/test_data_preprocessing_utils.py
index a4ec5dbf7..6e7dacde8 100644
--- a/tests/data/test_data_preprocessing_utils.py
+++ b/tests/data/test_data_preprocessing_utils.py
@@ -32,12 +32,15 @@
 )
 from tests.artifacts.testdata import (
     MODEL_NAME,
+    TWITTER_COMPLAINTS_DATA_ARROW,
+    TWITTER_COMPLAINTS_DATA_INPUT_OUTPUT_ARROW,
     TWITTER_COMPLAINTS_DATA_INPUT_OUTPUT_JSON,
     TWITTER_COMPLAINTS_DATA_INPUT_OUTPUT_JSONL,
     TWITTER_COMPLAINTS_DATA_INPUT_OUTPUT_PARQUET,
     TWITTER_COMPLAINTS_DATA_JSON,
     TWITTER_COMPLAINTS_DATA_JSONL,
     TWITTER_COMPLAINTS_DATA_PARQUET,
+    TWITTER_COMPLAINTS_TOKENIZED_ARROW,
     TWITTER_COMPLAINTS_TOKENIZED_JSON,
     TWITTER_COMPLAINTS_TOKENIZED_JSONL,
     TWITTER_COMPLAINTS_TOKENIZED_PARQUET,
@@ -62,6 +65,10 @@
             TWITTER_COMPLAINTS_DATA_INPUT_OUTPUT_JSONL,
             set(["ID", "Label", "input", "output"]),
         ),
+        (
+            TWITTER_COMPLAINTS_DATA_INPUT_OUTPUT_ARROW,
+            set(["ID", "Label", "input", "output", "sequence"]),
+        ),
         (
             TWITTER_COMPLAINTS_DATA_INPUT_OUTPUT_PARQUET,
             set(["ID", "Label", "input", "output"]),
@@ -80,6 +87,20 @@
                 ]
             ),
         ),
+        (
+            TWITTER_COMPLAINTS_TOKENIZED_ARROW,
+            set(
+                [
+                    "Tweet text",
+                    "ID",
+                    "Label",
+                    "text_label",
+                    "output",
+                    "input_ids",
+                    "labels",
+                ]
+            ),
+        ),
         (
             TWITTER_COMPLAINTS_TOKENIZED_PARQUET,
             set(
@@ -98,6 +119,10 @@
             TWITTER_COMPLAINTS_DATA_JSONL,
             set(["Tweet text", "ID", "Label", "text_label", "output"]),
         ),
+        (
+            TWITTER_COMPLAINTS_DATA_ARROW,
+            set(["Tweet text", "ID", "Label", "text_label", "output"]),
+        ),
         (
             TWITTER_COMPLAINTS_DATA_PARQUET,
             set(["Tweet text", "ID", "Label", "text_label", "output"]),
@@ -123,6 +148,11 @@ def test_load_dataset_with_datafile(datafile, column_names):
             set(["ID", "Label", "input", "output"]),
             "text_dataset_input_output_masking",
         ),
+        (
+            TWITTER_COMPLAINTS_DATA_INPUT_OUTPUT_ARROW,
+            set(["ID", "Label", "input", "output", "sequence"]),
+            "text_dataset_input_output_masking",
+        ),
         (
             TWITTER_COMPLAINTS_DATA_INPUT_OUTPUT_PARQUET,
             set(["ID", "Label", "input", "output"]),
@@ -163,6 +193,11 @@ def test_load_dataset_with_datafile(datafile, column_names):
             set(["Tweet text", "ID", "Label", "text_label", "output"]),
             "apply_custom_data_template",
         ),
+        (
+            TWITTER_COMPLAINTS_DATA_ARROW,
+            set(["Tweet text", "ID", "Label", "text_label", "output"]),
+            "apply_custom_data_template",
+        ),
         (
             TWITTER_COMPLAINTS_DATA_PARQUET,
             set(["Tweet text", "ID", "Label", "text_label", "output"]),
@@ -593,6 +628,12 @@ def test_process_dataargs(data_args):
                 training_data_path=TWITTER_COMPLAINTS_TOKENIZED_JSONL,
             )
         ),
+        # ARROW pretokenized train datasets
+        (
+            configs.DataArguments(
+                training_data_path=TWITTER_COMPLAINTS_TOKENIZED_ARROW,
+            )
+        ),
         # PARQUET pretokenized train datasets
         (
             configs.DataArguments(
diff --git a/tuning/utils/utils.py b/tuning/utils/utils.py
index 585011ae9..6eef6b2cf 100644
--- a/tuning/utils/utils.py
+++ b/tuning/utils/utils.py
@@ -31,6 +31,8 @@ def get_loader_for_filepath(file_path: str) -> str:
         return "text"
     if ext in (".json", ".jsonl"):
         return "json"
+    if ext in (".arrow"):
+        return "arrow"
     if ext in (".parquet"):
         return "parquet"
     return ext