diff --git a/include/boost/smart_ptr/shared_ptr.hpp b/include/boost/smart_ptr/shared_ptr.hpp
index 6674b15..3a60199 100644
--- a/include/boost/smart_ptr/shared_ptr.hpp
+++ b/include/boost/smart_ptr/shared_ptr.hpp
@@ -777,6 +777,16 @@ public:
         return pn < rhs.pn;
     }
 
+    template<class Y> bool owner_equals( shared_ptr<Y> const & rhs ) const BOOST_SP_NOEXCEPT
+    {
+        return pn == rhs.pn;
+    }
+
+    template<class Y> bool owner_equals( weak_ptr<Y> const & rhs ) const BOOST_SP_NOEXCEPT
+    {
+        return pn == rhs.pn;
+    }
+
     void * _internal_get_deleter( boost::detail::sp_typeinfo_ const & ti ) const BOOST_SP_NOEXCEPT
     {
         return pn.get_deleter( ti );
diff --git a/include/boost/smart_ptr/weak_ptr.hpp b/include/boost/smart_ptr/weak_ptr.hpp
index 07ba189..ddc8bfb 100644
--- a/include/boost/smart_ptr/weak_ptr.hpp
+++ b/include/boost/smart_ptr/weak_ptr.hpp
@@ -237,6 +237,16 @@ public:
         return pn < rhs.pn;
     }
 
+    template<class Y> bool owner_equals( weak_ptr<Y> const & rhs ) const BOOST_SP_NOEXCEPT
+    {
+        return pn == rhs.pn;
+    }
+
+    template<class Y> bool owner_equals( shared_ptr<Y> const & rhs ) const BOOST_SP_NOEXCEPT
+    {
+        return pn == rhs.pn;
+    }
+
 // Tasteless as this may seem, making all members public allows member templates
 // to work in the absence of member template friends. (Matthew Langston)
 
diff --git a/test/Jamfile b/test/Jamfile
index 7066d2f..c047faa 100644
--- a/test/Jamfile
+++ b/test/Jamfile
@@ -368,3 +368,4 @@ compile sp_pedantic_test.cpp
     <toolset>clang:<warnings-as-errors>on ;
 
 run sp_owner_before_test.cpp ;
+run sp_owner_equals_test.cpp ;
diff --git a/test/sp_owner_equals_test.cpp b/test/sp_owner_equals_test.cpp
new file mode 100644
index 0000000..e9a5842
--- /dev/null
+++ b/test/sp_owner_equals_test.cpp
@@ -0,0 +1,113 @@
+// Copyright 2020 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/shared_ptr.hpp>
+#include <boost/weak_ptr.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+int main()
+{
+    {
+        boost::shared_ptr<int> p1( new int );
+        boost::shared_ptr<int> p2( p1 );
+
+        BOOST_TEST( p1.owner_equals( p2 ) );
+        BOOST_TEST( p2.owner_equals( p1 ) );
+
+        boost::shared_ptr<int> p3( new int );
+
+        BOOST_TEST( !p1.owner_equals( p3 ) );
+        BOOST_TEST( !p3.owner_equals( p1 ) );
+
+        boost::shared_ptr<int> p4;
+        boost::shared_ptr<int> p5;
+
+        BOOST_TEST( p4.owner_equals( p5 ) );
+        BOOST_TEST( p5.owner_equals( p4 ) );
+
+        BOOST_TEST( !p4.owner_equals( p3 ) );
+        BOOST_TEST( !p3.owner_equals( p4 ) );
+
+        boost::shared_ptr<int> p6( static_cast<int*>(0) );
+
+        BOOST_TEST( !p4.owner_equals( p6 ) );
+        BOOST_TEST( !p6.owner_equals( p4 ) );
+
+        boost::shared_ptr<void> p7( p1 );
+
+        BOOST_TEST( p1.owner_equals( p7 ) );
+        BOOST_TEST( p7.owner_equals( p1 ) );
+
+        boost::shared_ptr<void> p8;
+
+        BOOST_TEST( !p1.owner_equals( p8 ) );
+        BOOST_TEST( !p8.owner_equals( p1 ) );
+
+        BOOST_TEST( p4.owner_equals( p8 ) );
+        BOOST_TEST( p8.owner_equals( p4 ) );
+
+        boost::weak_ptr<int> q1( p1 );
+
+        BOOST_TEST( p1.owner_equals( q1 ) );
+        BOOST_TEST( q1.owner_equals( p1 ) );
+
+        boost::weak_ptr<int> q2( p1 );
+
+        BOOST_TEST( q1.owner_equals( q2 ) );
+        BOOST_TEST( q2.owner_equals( q1 ) );
+
+        boost::weak_ptr<int> q3( p3 );
+
+        BOOST_TEST( !p1.owner_equals( q3 ) );
+        BOOST_TEST( !q3.owner_equals( p1 ) );
+
+        BOOST_TEST( !q1.owner_equals( q3 ) );
+        BOOST_TEST( !q3.owner_equals( q1 ) );
+
+        boost::weak_ptr<int> q4;
+
+        BOOST_TEST( p4.owner_equals( q4 ) );
+        BOOST_TEST( q4.owner_equals( p4 ) );
+
+        BOOST_TEST( !q1.owner_equals( q4 ) );
+        BOOST_TEST( !q4.owner_equals( q1 ) );
+
+        boost::weak_ptr<void> q5;
+
+        BOOST_TEST( q4.owner_equals( q5 ) );
+        BOOST_TEST( q5.owner_equals( q4 ) );
+
+        boost::weak_ptr<void> q7( p7 );
+
+        BOOST_TEST( p1.owner_equals( q7 ) );
+        BOOST_TEST( q7.owner_equals( p1 ) );
+
+        BOOST_TEST( q1.owner_equals( q7 ) );
+        BOOST_TEST( q7.owner_equals( q1 ) );
+
+        p1.reset();
+        p2.reset();
+        p3.reset();
+        p7.reset();
+
+        BOOST_TEST( q1.expired() );
+        BOOST_TEST( q2.expired() );
+        BOOST_TEST( q3.expired() );
+        BOOST_TEST( q7.expired() );
+
+        BOOST_TEST( q1.owner_equals( q2 ) );
+        BOOST_TEST( q2.owner_equals( q1 ) );
+
+        BOOST_TEST( q1.owner_equals( q7 ) );
+        BOOST_TEST( q7.owner_equals( q1 ) );
+
+        BOOST_TEST( !q1.owner_equals( q3 ) );
+        BOOST_TEST( !q3.owner_equals( q1 ) );
+
+        BOOST_TEST( !q1.owner_equals( q4 ) );
+        BOOST_TEST( !q4.owner_equals( q1 ) );
+    }
+
+    return boost::report_errors();
+}