Santi Venanzio e Ansovino was a Roman Catholic church situated near the Capitoline Hill in Rome, in the area now occupied by the Piazza d'Aracoeli.

The original church at the site was named San Giovanni Battista in Mercatello, after a marketplace here, moved later to Piazza Navona.

In 1542, Pope Paul III granted the church to a confraternity, and later to Basilian Monks from the Abbey of Grottaferrata.

[1] The Fontana di Piazza d'Aracoeli is featured prominently in the print by Giuseppe Vasi depicting the facade of this church; the fountain was designed in 1589 by Giacomo della Porta.

The church however was pulled down in 1928 to make for new roads and a piazza adjacent to the Altare della Patria.