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diff --git a/src/arrow/cpp/src/arrow/array/builder_decimal.h b/src/arrow/cpp/src/arrow/array/builder_decimal.h
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+++ b/src/arrow/cpp/src/arrow/array/builder_decimal.h
@@ -0,0 +1,94 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+#pragma once
+
+#include <memory>
+
+#include "arrow/array/array_decimal.h"
+#include "arrow/array/builder_base.h"
+#include "arrow/array/builder_binary.h"
+#include "arrow/array/data.h"
+#include "arrow/status.h"
+#include "arrow/type.h"
+#include "arrow/util/visibility.h"
+
+namespace arrow {
+
+class ARROW_EXPORT Decimal128Builder : public FixedSizeBinaryBuilder {
+ public:
+  using TypeClass = Decimal128Type;
+  using ValueType = Decimal128;
+
+  explicit Decimal128Builder(const std::shared_ptr<DataType>& type,
+                             MemoryPool* pool = default_memory_pool());
+
+  using FixedSizeBinaryBuilder::Append;
+  using FixedSizeBinaryBuilder::AppendValues;
+  using FixedSizeBinaryBuilder::Reset;
+
+  Status Append(Decimal128 val);
+  void UnsafeAppend(Decimal128 val);
+  void UnsafeAppend(util::string_view val);
+
+  Status FinishInternal(std::shared_ptr<ArrayData>* out) override;
+
+  /// \cond FALSE
+  using ArrayBuilder::Finish;
+  /// \endcond
+
+  Status Finish(std::shared_ptr<Decimal128Array>* out) { return FinishTyped(out); }
+
+  std::shared_ptr<DataType> type() const override { return decimal_type_; }
+
+ protected:
+  std::shared_ptr<Decimal128Type> decimal_type_;
+};
+
+class ARROW_EXPORT Decimal256Builder : public FixedSizeBinaryBuilder {
+ public:
+  using TypeClass = Decimal256Type;
+  using ValueType = Decimal256;
+
+  explicit Decimal256Builder(const std::shared_ptr<DataType>& type,
+                             MemoryPool* pool = default_memory_pool());
+
+  using FixedSizeBinaryBuilder::Append;
+  using FixedSizeBinaryBuilder::AppendValues;
+  using FixedSizeBinaryBuilder::Reset;
+
+  Status Append(const Decimal256& val);
+  void UnsafeAppend(const Decimal256& val);
+  void UnsafeAppend(util::string_view val);
+
+  Status FinishInternal(std::shared_ptr<ArrayData>* out) override;
+
+  /// \cond FALSE
+  using ArrayBuilder::Finish;
+  /// \endcond
+
+  Status Finish(std::shared_ptr<Decimal256Array>* out) { return FinishTyped(out); }
+
+  std::shared_ptr<DataType> type() const override { return decimal_type_; }
+
+ protected:
+  std::shared_ptr<Decimal256Type> decimal_type_;
+};
+
+using DecimalBuilder = Decimal128Builder;
+
+}  // namespace arrow