diff --git a/include/boost/predef/architecture/alpha.h b/include/boost/predef/architecture/alpha.h
new file mode 100644
index 0000000000000000000000000000000000000000..5bcade18b17ea586085cd22c234c914c97b7eafa
--- /dev/null
+++ b/include/boost/predef/architecture/alpha.h
@@ -0,0 +1,59 @@
+/*
+Copyright Rene Rivera 2008-2015
+Distributed under the Boost Software License, Version 1.0.
+(See accompanying file LICENSE_1_0.txt or copy at
+http://www.boost.org/LICENSE_1_0.txt)
+*/
+
+#ifndef BOOST_PREDEF_ARCHITECTURE_ALPHA_H
+#define BOOST_PREDEF_ARCHITECTURE_ALPHA_H
+
+#include <boost/predef/version_number.h>
+#include <boost/predef/make.h>
+
+/*`
+[heading `BOOST_ARCH_ALPHA`]
+
+[@http://en.wikipedia.org/wiki/DEC_Alpha DEC Alpha] architecture.
+
+[table
+    [[__predef_symbol__] [__predef_version__]]
+    [[`__alpha__`] [__predef_detection__]]
+    [[`__alpha`] [__predef_detection__]]
+    [[`_M_ALPHA`] [__predef_detection__]]
+
+    [[`__alpha_ev4__`] [4.0.0]]
+    [[`__alpha_ev5__`] [5.0.0]]
+    [[`__alpha_ev6__`] [6.0.0]]
+    ]
+ */
+
+#define BOOST_ARCH_ALPHA BOOST_VERSION_NUMBER_NOT_AVAILABLE
+
+#if defined(__alpha__) || defined(__alpha) || \
+    defined(_M_ALPHA)
+#   undef BOOST_ARCH_ALPHA
+#   if !defined(BOOST_ARCH_ALPHA) && defined(__alpha_ev4__)
+#       define BOOST_ARCH_ALPHA BOOST_VERSION_NUMBER(4,0,0)
+#   endif
+#   if !defined(BOOST_ARCH_ALPHA) && defined(__alpha_ev5__)
+#       define BOOST_ARCH_ALPHA BOOST_VERSION_NUMBER(5,0,0)
+#   endif
+#   if !defined(BOOST_ARCH_ALPHA) && defined(__alpha_ev6__)
+#       define BOOST_ARCH_ALPHA BOOST_VERSION_NUMBER(6,0,0)
+#   endif
+#   if !defined(BOOST_ARCH_ALPHA)
+#       define BOOST_ARCH_ALPHA BOOST_VERSION_NUMBER_AVAILABLE
+#   endif
+#endif
+
+#if BOOST_ARCH_ALPHA
+#   define BOOST_ARCH_ALPHA_AVAILABLE
+#endif
+
+#define BOOST_ARCH_ALPHA_NAME "DEC Alpha"
+
+#endif
+
+#include <boost/predef/detail/test.h>
+BOOST_PREDEF_DECLARE_TEST(BOOST_ARCH_ALPHA,BOOST_ARCH_ALPHA_NAME)