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diff --git a/boost/hana/ext/boost/tuple.hpp b/boost/hana/ext/boost/tuple.hpp
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+/*!
+@file
+Adapts `boost::tuple` for use with Hana.
+
+@copyright Louis Dionne 2013-2016
+Distributed under the Boost Software License, Version 1.0.
+(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef BOOST_HANA_EXT_BOOST_TUPLE_HPP
+#define BOOST_HANA_EXT_BOOST_TUPLE_HPP
+
+#include <boost/hana/bool.hpp>
+#include <boost/hana/config.hpp>
+#include <boost/hana/detail/decay.hpp>
+#include <boost/hana/fwd/at.hpp>
+#include <boost/hana/fwd/core/make.hpp>
+#include <boost/hana/fwd/core/tag_of.hpp>
+#include <boost/hana/fwd/drop_front.hpp>
+#include <boost/hana/fwd/is_empty.hpp>
+#include <boost/hana/fwd/length.hpp>
+#include <boost/hana/integral_constant.hpp>
+
+#include <boost/tuple/tuple.hpp>
+
+#include <cstddef>
+#include <utility>
+
+
+#ifdef BOOST_HANA_DOXYGEN_INVOKED
+namespace boost {
+    //! @ingroup group-ext-boost
+    //! Adapter for `boost::tuple`s.
+    //!
+    //!
+    //! Modeled concepts
+    //! ----------------
+    //! A `boost::tuple` is a model of the `Sequence` concept, and all the
+    //! concepts it refines. That makes it essentially the same as a Hana
+    //! tuple, although the complexity of some operations might differ from
+    //! that of Hana's tuple.
+    //!
+    //! @include example/ext/boost/tuple.cpp
+    template <typename ...T>
+    struct tuple { };
+}
+#endif
+
+
+BOOST_HANA_NAMESPACE_BEGIN
+    namespace ext { namespace boost { struct tuple_tag; }}
+
+    template <typename ...Xs>
+    struct tag_of<boost::tuple<Xs...>> {
+        using type = ext::boost::tuple_tag;
+    };
+
+    template <typename H, typename T>
+    struct tag_of<boost::tuples::cons<H, T>> {
+        using type = ext::boost::tuple_tag;
+    };
+
+    template <>
+    struct tag_of<boost::tuples::null_type> {
+        using type = ext::boost::tuple_tag;
+    };
+
+    //////////////////////////////////////////////////////////////////////////
+    // Iterable
+    //////////////////////////////////////////////////////////////////////////
+    template <>
+    struct at_impl<ext::boost::tuple_tag> {
+        template <typename Xs, typename N>
+        static constexpr decltype(auto) apply(Xs&& xs, N const&) {
+            constexpr std::size_t n = N::value;
+            return static_cast<Xs&&>(xs).template get<n>();
+        }
+    };
+
+    template <>
+    struct drop_front_impl<ext::boost::tuple_tag> {
+        template <std::size_t n, typename Xs, std::size_t ...i>
+        static constexpr auto drop_front_helper(Xs&& xs, std::index_sequence<i...>) {
+            return hana::make<ext::boost::tuple_tag>(
+                hana::at_c<n + i>(static_cast<Xs&&>(xs))...
+            );
+        }
+
+        template <typename Xs, typename N>
+        static constexpr auto apply(Xs&& xs, N const&) {
+            constexpr std::size_t n = N::value;
+            constexpr std::size_t len = decltype(hana::length(xs))::value;
+            return drop_front_helper<n>(static_cast<Xs&&>(xs),
+                    std::make_index_sequence<(n < len ? len - n : 0)>{});
+        }
+    };
+
+    template <>
+    struct is_empty_impl<ext::boost::tuple_tag> {
+        static constexpr auto apply(boost::tuples::null_type const&)
+        { return hana::true_c; }
+
+        template <typename H, typename T>
+        static constexpr auto apply(boost::tuples::cons<H, T> const&)
+        { return hana::false_c; }
+    };
+
+    //////////////////////////////////////////////////////////////////////////
+    // Foldable
+    //////////////////////////////////////////////////////////////////////////
+    template <>
+    struct length_impl<ext::boost::tuple_tag> {
+        template <typename Xs>
+        static constexpr auto apply(Xs const&) {
+            return hana::size_c<boost::tuples::length<Xs>::value>;
+        }
+    };
+
+    //////////////////////////////////////////////////////////////////////////
+    // Sequence
+    //////////////////////////////////////////////////////////////////////////
+    template <>
+    struct Sequence<ext::boost::tuple_tag> {
+        static constexpr bool value = true;
+    };
+
+    template <>
+    struct make_impl<ext::boost::tuple_tag> {
+        template <typename ...Xs>
+        static constexpr auto apply(Xs&& ...xs) {
+            return boost::tuples::tuple<
+                typename detail::decay<Xs>::type...
+            >{static_cast<Xs&&>(xs)...};
+        }
+    };
+BOOST_HANA_NAMESPACE_END
+
+#endif // !BOOST_HANA_EXT_BOOST_TUPLE_HPP