Church of Transfiguration of Savior in Bolvanovka (Russian: Храм Спаса Преображения на Болвановке), also abbreviated to Saviour in Bolvanovka (Спас на Болвановке), is an Orthodox church in Zamoskvorechye District of Moscow.

Болвановка), derives its name from Russian bolvan (болван), which could mean either a billet or, in obsolete sense, a non-Orthodox cult image.

There have different Bolvanovka neighborhoods in medieval Moscow, a sign of wide Tatar presence (e.g. near Taganka Square).

A legend says that the church stands on site of a Tatar bolvan, an artifact which symbolized submission of Moscow to Golden Horde.

The new baroque building was built in the 18th century; completion date is disputed (1722 or later); what is known definitely is that the church was consecrated in 1755.