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+// 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.
+
+// NOTE: API is EXPERIMENTAL and will change without going through a
+// deprecation cycle
+
+#pragma once
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "arrow/result.h"
+#include "arrow/status.h"
+#include "arrow/util/visibility.h"
+
+namespace arrow {
+namespace compute {
+
+class Function;
+class FunctionOptionsType;
+
+/// \brief A mutable central function registry for built-in functions as well
+/// as user-defined functions. Functions are implementations of
+/// arrow::compute::Function.
+///
+/// Generally, each function contains kernels which are implementations of a
+/// function for a specific argument signature. After looking up a function in
+/// the registry, one can either execute it eagerly with Function::Execute or
+/// use one of the function's dispatch methods to pick a suitable kernel for
+/// lower-level function execution.
+class ARROW_EXPORT FunctionRegistry {
+ public:
+  ~FunctionRegistry();
+
+  /// \brief Construct a new registry. Most users only need to use the global
+  /// registry
+  static std::unique_ptr<FunctionRegistry> Make();
+
+  /// \brief Add a new function to the registry. Returns Status::KeyError if a
+  /// function with the same name is already registered
+  Status AddFunction(std::shared_ptr<Function> function, bool allow_overwrite = false);
+
+  /// \brief Add aliases for the given function name. Returns Status::KeyError if the
+  /// function with the given name is not registered
+  Status AddAlias(const std::string& target_name, const std::string& source_name);
+
+  /// \brief Add a new function options type to the registry. Returns Status::KeyError if
+  /// a function options type with the same name is already registered
+  Status AddFunctionOptionsType(const FunctionOptionsType* options_type,
+                                bool allow_overwrite = false);
+
+  /// \brief Retrieve a function by name from the registry
+  Result<std::shared_ptr<Function>> GetFunction(const std::string& name) const;
+
+  /// \brief Return vector of all entry names in the registry. Helpful for
+  /// displaying a manifest of available functions
+  std::vector<std::string> GetFunctionNames() const;
+
+  /// \brief Retrieve a function options type by name from the registry
+  Result<const FunctionOptionsType*> GetFunctionOptionsType(
+      const std::string& name) const;
+
+  /// \brief The number of currently registered functions
+  int num_functions() const;
+
+ private:
+  FunctionRegistry();
+
+  // Use PIMPL pattern to not have std::unordered_map here
+  class FunctionRegistryImpl;
+  std::unique_ptr<FunctionRegistryImpl> impl_;
+};
+
+/// \brief Return the process-global function registry
+ARROW_EXPORT FunctionRegistry* GetFunctionRegistry();
+
+}  // namespace compute
+}  // namespace arrow