sr. dr. vassa larin (born varvara georgievna larina, ; december 11, 1970 in nyack, new york, united states) is a russian orthodox ryassofor nun, the host of the popular show "coffee with sr. vassa", author of many scholarly articles and a monograph on byzantine liturgy and theology, and outspoken public intellectual on current issues of the russian orthodox church outside russia (rocor). she teaches liturgical studies at the catholic theological faculty of the university of vienna in austria.