Jacob Guilera Casas (born 30 March 1979[citation needed]) is a Spanish single arm amputee para-alpine standing skier.

[8] At the last round of the European Cup in March 2008, an event held in La Molina, Spain, he was one of several Spanish skiers competing.

[11][12] Guilera competed in the super-G event of the 2009 IPC Alpine Skiing World Championships held in Jeongseon, South Korea; he did not advance to the finals.

[15] Guilera was one of five – nine when guides are counted – Spanish skiers competing at the 2010 IPC Disabled Alpine Skiing World Cup, hosted in Sestriere.

[5] The Campionat de Catalunya Open d'Esquí Alpí took place in late January 2010 with skiers representing the five regions of Spain including Aragon, Galicia, Catalonia, Madrid and the Basque Country.

[21] He participated in the standing category at the first World Cup event in the 2010/2011 season, which was held in Arta Terme, Italy in early January 2011.