Liturgy of St John Chrysostom, Op. 31 (Russian: Литургия Иоанна Златоуста), is a musical work by Sergei Rachmaninoff, one of his two major unaccompanied choral works (the other being his All-Night Vigil). The Divine Liturgy of St. John Chrysostom is the primary worship service of the Eastern Orthodox Church.

Date of composition 1910
Premiered 1910, November 25th in Moscow, Russia
Type Sacred choral
Catalogue Op. 31
Spoken language Russian
Instruments Chorus/Choir - Mixed Chorus ;
Autotranslations beta Sergueï Rachmaninov: Liturgy of St John Chrysostom, Op. 31
Sergej Vasil'evič Rachmaninov: Liturgy of St John Chrysostom, Op. 31
Sergei Wassiljewitsch Rachmaninow: Liturgy of St John Chrysostom, Op. 31