Izmailovsky Trinity Cathedral - Orthodox Cathedral on Troitsky Prospekt in the Admiralteysky District of St. Petersburg. The full historical name is the Cathedral of the Holy Life-Giving Trinity of the Life Guards of the Izmailovsky Regiment.
The parish of the church belongs to the St. Petersburg diocese of the Russian Orthodox Church, it is part of the Admiralteysky deanery district. The rector is Mitred Protopriest Gennady Bartov.