diff --git a/arrow/src/array/data.rs b/arrow/src/array/data.rs
index 32067405265..f8a1bed975f 100644
--- a/arrow/src/array/data.rs
+++ b/arrow/src/array/data.rs
@@ -1163,7 +1163,7 @@ fn layout(data_type: &DataType) -> DataTypeLayout {
         DataType::UInt16 => DataTypeLayout::new_fixed_width(size_of::<u16>()),
         DataType::UInt32 => DataTypeLayout::new_fixed_width(size_of::<u32>()),
         DataType::UInt64 => DataTypeLayout::new_fixed_width(size_of::<u64>()),
-        DataType::Float16 => unimplemented!(),
+        DataType::Float16 => DataTypeLayout::new_fixed_width(size_of::<f16>()),
         DataType::Float32 => DataTypeLayout::new_fixed_width(size_of::<f32>()),
         DataType::Float64 => DataTypeLayout::new_fixed_width(size_of::<f64>()),
         DataType::Timestamp(_, _) => DataTypeLayout::new_fixed_width(size_of::<i64>()),