Convento de São João de Tarouca, Cistercian monastery in São João de Tarouca, Portugal.

The Mosteiro de São João de Tarouca stands on the slope of the Serra de Leomil above the Varosa valley. Its church has a cruciform plan with Romanesque and Gothic elements and a Renaissance portal; the facade is divided by pilasters topped with pinnacles, and the interior has three naves with gilded altarpieces and a monks' choir stall.

Founded around 1140, it is considered the first Cistercian house in Portugal, affiliated with Clairvaux. The founder and first abbot was Bernardo de Tarouca, a French noble monk sent by Bernard of Clairvaux. The abbey church's first stone was laid in 1152, after Afonso Henriques's victory at Trancoso, with João Froilaz as master builder. The abbey closed in 1834 when religious orders were extinguished, and the church became a parish church.

The church keeps gilded carved altarpieces with painted wooden panels from the early 16th century, attributed to Gaspar Vaz: Saint Peter, Our Lady of Glory and the Saint Michael altar. In the sacristy are figurative azulejos depicting the monastery's foundation. The monks' gilded choir stalls stand in the central nave.

The church became the parish church of São João de Tarouca after 1834, so it can be visited as a working place of worship; most of the regular monastic buildings were demolished and only the church and surviving remains stand. The site lies on the slope of the Serra de Leomil above the Varosa valley, reached from the parish of São João de Tarouca in the municipality of Tarouca.

The monastery bears an uncommon dedication to Saint John rather than the Virgin Mary, breaking from typical Cistercian naming customs. This choice reflects the founder's independent vision and sets this place apart from many other monastic communities of its era.