diff --git a/parquet/src/arrow/array_reader/primitive_array.rs b/parquet/src/arrow/array_reader/primitive_array.rs
index a952e00e12e..23008ff5207 100644
--- a/parquet/src/arrow/array_reader/primitive_array.rs
+++ b/parquet/src/arrow/array_reader/primitive_array.rs
@@ -270,6 +270,59 @@ where
 
                 Arc::new(array) as ArrayRef
             }
+            ArrowType::Dictionary(_, value_type) => match value_type.as_ref() {
+                ArrowType::Decimal128(p, s) => {
+                    let array = match array.data_type() {
+                        ArrowType::Int32 => array
+                            .as_any()
+                            .downcast_ref::<Int32Array>()
+                            .unwrap()
+                            .unary(|i| i as i128)
+                            as Decimal128Array,
+                        ArrowType::Int64 => array
+                            .as_any()
+                            .downcast_ref::<Int64Array>()
+                            .unwrap()
+                            .unary(|i| i as i128)
+                            as Decimal128Array,
+                        _ => {
+                            return Err(arrow_err!(
+                                "Cannot convert {:?} to decimal dictionary",
+                                array.data_type()
+                            ));
+                        }
+                    }
+                    .with_precision_and_scale(*p, *s)?;
+
+                    arrow_cast::cast(&array, target_type)?
+                },
+                ArrowType::Decimal256(p, s) => {
+                    let array = match array.data_type() {
+                        ArrowType::Int32 => array
+                            .as_any()
+                            .downcast_ref::<Int32Array>()
+                            .unwrap()
+                            .unary(i256::from)
+                            as Decimal256Array,
+                        ArrowType::Int64 => array
+                            .as_any()
+                            .downcast_ref::<Int64Array>()
+                            .unwrap()
+                            .unary(i256::from)
+                            as Decimal256Array,
+                        _ => {
+                            return Err(arrow_err!(
+                                "Cannot convert {:?} to decimal dictionary",
+                                array.data_type()
+                            ));
+                        }
+                    }
+                    .with_precision_and_scale(*p, *s)?;
+
+                    arrow_cast::cast(&array, target_type)?
+                }
+                _ => arrow_cast::cast(&array, target_type)?,
+            },
             _ => arrow_cast::cast(&array, target_type)?,
         };
 
diff --git a/parquet/src/arrow/arrow_writer/mod.rs b/parquet/src/arrow/arrow_writer/mod.rs
index 41f15569fda..716abf415c0 100644
--- a/parquet/src/arrow/arrow_writer/mod.rs
+++ b/parquet/src/arrow/arrow_writer/mod.rs
@@ -843,6 +843,27 @@ fn write_leaf(writer: &mut ColumnWriter<'_>, levels: &ArrayLevels) -> Result<usi
                         .unary::<_, Int32Type>(|v| v.as_i128() as i32);
                     write_primitive(typed, array.values(), levels)
                 }
+                ArrowDataType::Dictionary(_, value_type) => match value_type.as_ref() {
+                    ArrowDataType::Decimal128(_, _) => {
+                        let array = arrow_cast::cast(column, value_type)?;
+                        let array = array
+                            .as_primitive::<Decimal128Type>()
+                            .unary::<_, Int32Type>(|v| v as i32);
+                        write_primitive(typed, array.values(), levels)
+                    }
+                    ArrowDataType::Decimal256(_, _) => {
+                        let array = arrow_cast::cast(column, value_type)?;
+                        let array = array
+                            .as_primitive::<Decimal256Type>()
+                            .unary::<_, Int32Type>(|v| v.as_i128() as i32);
+                        write_primitive(typed, array.values(), levels)
+                    }
+                    _ => {
+                        let array = arrow_cast::cast(column, &ArrowDataType::Int32)?;
+                        let array = array.as_primitive::<Int32Type>();
+                        write_primitive(typed, array.values(), levels)
+                    }
+                },
                 _ => {
                     let array = arrow_cast::cast(column, &ArrowDataType::Int32)?;
                     let array = array.as_primitive::<Int32Type>();
@@ -891,6 +912,27 @@ fn write_leaf(writer: &mut ColumnWriter<'_>, levels: &ArrayLevels) -> Result<usi
                         .unary::<_, Int64Type>(|v| v.as_i128() as i64);
                     write_primitive(typed, array.values(), levels)
                 }
+                ArrowDataType::Dictionary(_, value_type) => match value_type.as_ref() {
+                    ArrowDataType::Decimal128(_, _) => {
+                        let array = arrow_cast::cast(column, value_type)?;
+                        let array = array
+                            .as_primitive::<Decimal128Type>()
+                            .unary::<_, Int64Type>(|v| v as i64);
+                        write_primitive(typed, array.values(), levels)
+                    }
+                    ArrowDataType::Decimal256(_, _) => {
+                        let array = arrow_cast::cast(column, value_type)?;
+                        let array = array
+                            .as_primitive::<Decimal256Type>()
+                            .unary::<_, Int64Type>(|v| v.as_i128() as i64);
+                        write_primitive(typed, array.values(), levels)
+                    }
+                    _ => {
+                        let array = arrow_cast::cast(column, &ArrowDataType::Int64)?;
+                        let array = array.as_primitive::<Int64Type>();
+                        write_primitive(typed, array.values(), levels)
+                    }
+                },
                 _ => {
                     let array = arrow_cast::cast(column, &ArrowDataType::Int64)?;
                     let array = array.as_primitive::<Int64Type>();
@@ -1093,7 +1135,7 @@ mod tests {
     use arrow::util::data_gen::create_random_array;
     use arrow::util::pretty::pretty_format_batches;
     use arrow::{array::*, buffer::Buffer};
-    use arrow_buffer::{IntervalDayTime, IntervalMonthDayNano, NullBuffer};
+    use arrow_buffer::{i256, IntervalDayTime, IntervalMonthDayNano, NullBuffer};
     use arrow_schema::Fields;
     use half::f16;
 
@@ -2670,6 +2712,52 @@ mod tests {
         one_column_roundtrip_with_schema(Arc::new(d), schema);
     }
 
+    #[test]
+    fn arrow_writer_decimal128_dictionary() {
+        let integers = vec![12345, 56789, 34567];
+
+        let keys = UInt8Array::from(vec![Some(0), None, Some(1), Some(2), Some(1)]);
+
+        let values = Decimal128Array::from(integers.clone())
+            .with_precision_and_scale(5, 2)
+            .unwrap();
+
+        let array = DictionaryArray::new(keys, Arc::new(values));
+        one_column_roundtrip(Arc::new(array.clone()), true);
+
+        let values = Decimal128Array::from(integers)
+            .with_precision_and_scale(12, 2)
+            .unwrap();
+
+        let array = array.with_values(Arc::new(values));
+        one_column_roundtrip(Arc::new(array), true);
+    }
+
+    #[test]
+    fn arrow_writer_decimal256_dictionary() {
+        let integers = vec![
+            i256::from_i128(12345),
+            i256::from_i128(56789),
+            i256::from_i128(34567),
+        ];
+
+        let keys = UInt8Array::from(vec![Some(0), None, Some(1), Some(2), Some(1)]);
+
+        let values = Decimal256Array::from(integers.clone())
+            .with_precision_and_scale(5, 2)
+            .unwrap();
+
+        let array = DictionaryArray::new(keys, Arc::new(values));
+        one_column_roundtrip(Arc::new(array.clone()), true);
+
+        let values = Decimal256Array::from(integers)
+            .with_precision_and_scale(12, 2)
+            .unwrap();
+
+        let array = array.with_values(Arc::new(values));
+        one_column_roundtrip(Arc::new(array), true);
+    }
+
     #[test]
     fn arrow_writer_string_dictionary_unsigned_index() {
         // define schema