The Annunciation Church of the Alexander Nevsky Lavra, or in full, the Church of the Blessing of the Most Holy Virgin and the Holy Blessed Prince Alexander Nevsky is a Russian Orthodox church in Saint Petersburg. It is in the Diocese of Saint Petersburg and is part of the Alexander Nevsky Lavra.

Saint Alexander Nevsky Lavra or Saint Alexander Nevsky Monastery was founded by Peter I of Russia in 1710 at the eastern end of the Nevsky Prospekt in Saint Petersburg, in the belief that this was the site of the Neva Battle in 1240 when Alexander Nevsky, a prince, defeated the Swedes. But the battle took place about 12 miles (19 km) away from that site. "On April 5, 1713, in St. Petersburg, in the presence of Peter I, the wooden Church of the Annunciation was consecrated. This day is considered the official founding date of the Alexander Nevsky Lavra."