Built in the 13th century, the church of San Esteban is a Romanesque structure in Segovia, Spain. It is notable for its thin tower, which, before losing the tall Baroque spire that crowned it and rose to a height of 56 meters, was the tallest Romanesque bell tower on the Iberian Peninsula. It only rises to about 50 metres at its peak, formed by a well-known metal cock and weather vane, thanks to the roof that now covers it and was constructed a few decades ago. For this reason, it and the church's tower in Valladolid can both be referred to as "queens of the Romanesque towers of Castile," the tallest examples of this architectural design in Spain and the Iberian Peninsula.

The church has a portico on the southern façade with ten arches and capitals embellished with mediaeval engravings. It is situated in the city's plaza of the same name. The interior was renovated in the Baroque style following a fire in the 18th century.