diff --git a/Doc/library/subprocess.rst b/Doc/library/subprocess.rst
--- a/Doc/library/subprocess.rst
+++ b/Doc/library/subprocess.rst
@@ -725,6 +725,14 @@
    child process.
 
 
+.. attribute:: Popen.args
+
+   the *args* argument as it was passed to :class:`Popen` -- a
+   sequence of program arguments or else a single string.
+
+   .. versionadded:: 3.3
+
+
 .. attribute:: Popen.stdin
 
    If the *stdin* argument was :data:`PIPE`, this attribute is a writeable