Santa Maria in Poggio (St Mary on the Hill) is a Roman Catholic parish church located in the Piazza della Crocetta in the northeastern neighborhood of historic Viterbo, region of Lazio, Italy.

The church was formerly the parish of St Rose of Viterbo, and is a block south of the monastery now named after her.

Initially, the saint was buried for three years in this church, but exhumed, putatively intact, and reinterred in the Monaster Santa Rosa.

However, the same bishop left in his inheritance money to found an institute for poor girls attached to this church.

But by the 17th century, the church and adjacent convent had been abandoned by the Franciscans and granted to an order known as Fratelli del Buon Morire (Brothers of the Good Death).