Rush Rhees (; 19 March 1905 – 22 May 1989) was an American philosopher.
He is principally known as a student, friend, and literary executor of the philosopher Ludwig Wittgenstein.
With G.
E.
M.
Anscombe, he edited Wittgenstein's posthumous Philosophical Investigations (1953), a highly influential work.
He was also responsible for publishing other works by Wittgenstein, including Remarks on the Foundations of Mathematics, Philosophische Bemerkungen, Philosophical Remarks, and Philosophical Grammar.
Rhees taught philosophy at Swansea University from 1940 until 1966, when he took early retirement to devote more time to editing Wittgenstein's works.