Francisco de Arruda

Francisco de Arruda (died 1547) was a Portuguese architect and sculptor, younger brother of Diogo de Arruda. With his brother he helped forge the Manueline style, Portugal's exuberant late Gothic; his most famous work is the Belém Tower in Lisbon, commissioned by Manuel I to guard the mouth of the Tagus.

He repaired castles with semicircular artillery towers, worked on strongholds in Morocco and in 1520 designed Elvas Cathedral. After Diogo's death in 1531 his later buildings moved toward Renaissance forms. He died on 30 November 1547.