Casa Aguayo, Colonial government building in Centro Histórico, Puebla, Mexico

Casa Aguayo is a historic building in Puebla, Mexico, now the seat of the state government. Its facade retains 17th-century elements such as very low arches framed by cornices ending in interlaced patterns, and it preserves hydraulic works including a basin and both open and underground water channels. In 1769 the house was divided into four independent houses.

In the 17th century the house was named after its owner, Captain and regidor Juan Martínez de Aguayo, who had arrived in Puebla in the 16th century; it served as a grain store and temporary shelter for pigs. In the 1830s the weaver Francisco Armenta ran the "baños de Armenta" there, using the temazcal, while the rest of the house lodged Mexican army veterans. It later quartered hundreds of soldiers who fought in the 1862 Battle of Puebla. In 1987 Governor Mariano Piña Olaya turned it into state government offices, and under Melquiades Morales it was restored with the Mary Street Jenkins Foundation to become the seat of the state government.

The house takes its name from Captain and regidor Juan Martínez de Aguayo, who arrived in Puebla in the 16th century. In the 1830s its temazcal gave rise to the "baños de Armenta", run by the weaver Francisco Armenta, while the rest of the building lodged veterans of the Mexican army.

Casa Aguayo serves as the seat of Puebla's state government, so public visiting is tied to official business rather than regular tourist tours. The building stands at the coordinates 19.04526, -98.18803 in the city of Puebla. Visitors should confirm access conditions with the state government before planning a stop.

In the 19th century the house had a temazcal, a Mesoamerican steam bath, and from the 1830s the "baños de Armenta" run by the weaver Francisco Armenta operated there, while the rest of the building lodged veterans of the Mexican army.