St Grwst's Church, Llanrwst, is located in Church Street (Tan yr Eglwys), Llanrwst, Conwy, Wales. It is an active Church in Wales parish church and is part of the Aberconwy Mission Area in the archdeaconry of St Asaph, and the diocese of St Asaph. Its benefice is united with those of Llanddoged with Capel Garmon, Llansanffraid Glan Conwy, and Eglwysbach. The church is designated by Cadw as a Grade I listed building.