Hieromartyr Peter of Krutitsy (??????????´????? ???? ?????´????, born Pyotr Fyodorovich Polyansky, ???? ????????? ????´?????; June 28, 1862 – September 27 O.
S./October 10, 1937), was a Russian Orthodox bishop and martyr.
From April 12 till December 9, 1925 he was the head of the Russian Orthodox Church, serving as the patriarchal locum tenens.
Despite his imprisonment, he remained technically locum tenens until his death in 1937.