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diff --git a/src/arrow/cpp/src/plasma/plasma_allocator.h b/src/arrow/cpp/src/plasma/plasma_allocator.h
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+++ b/src/arrow/cpp/src/plasma/plasma_allocator.h
@@ -0,0 +1,61 @@
+// 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 <cstddef>
+#include <cstdint>
+
+namespace plasma {
+
+class PlasmaAllocator {
+ public:
+  /// Allocates size bytes and returns a pointer to the allocated memory. The
+  /// memory address will be a multiple of alignment, which must be a power of two.
+  ///
+  /// \param alignment Memory alignment.
+  /// \param bytes Number of bytes.
+  /// \return Pointer to allocated memory.
+  static void* Memalign(size_t alignment, size_t bytes);
+
+  /// Frees the memory space pointed to by mem, which must have been returned by
+  /// a previous call to Memalign()
+  ///
+  /// \param mem Pointer to memory to free.
+  /// \param bytes Number of bytes to be freed.
+  static void Free(void* mem, size_t bytes);
+
+  /// Sets the memory footprint limit for Plasma.
+  ///
+  /// \param bytes Plasma memory footprint limit in bytes.
+  static void SetFootprintLimit(size_t bytes);
+
+  /// Get the memory footprint limit for Plasma.
+  ///
+  /// \return Plasma memory footprint limit in bytes.
+  static int64_t GetFootprintLimit();
+
+  /// Get the number of bytes allocated by Plasma so far.
+  /// \return Number of bytes allocated by Plasma so far.
+  static int64_t Allocated();
+
+ private:
+  static int64_t allocated_;
+  static int64_t footprint_limit_;
+};
+
+}  // namespace plasma