Alfonso II (1174 – 1 December 1209) was the second son of Alfonso II of Aragon and Sancha of Castile. His father transferred the County of Provence from his uncle Sancho to him in 1185. Alfonso II was born in Barcelona. In 1193, Alfonso married Gersenda II of Sabran, daughter of Rainou, Count of Forcalquier and Gersend of Forcalquier. They had a child who became Ramon Berenguer IV as count of Provence.