Javier Calvo Guirao (born January 21, 1991) is a Spanish actor, stage director, and film director. He is the best known for his role of Fernando "Fer" Redondo in the Antena 3 series Física o Química and for creating and directing the musical La llamada together with Javier Ambrossi, as well as co-directing its film adaptation.
Calvo began acting in theatre at age 11, eventually appearing in 2007 in film Doctor Infierno. Beginning in 2008, he starred in the Antena 3 television series Física o Química, portraying gay teenager Fernando "Fer" Redondo. Focusing on problems such as drugs, addictions, anorexia and sexual orientation, the series attracted much controversy. Calvo considers the themes of the series "problems that are also present in reality". He, however, received critical acclaim for portraying a gay male in his debut role.
On May 5, 2012, a fan-conference with Calvo took place in Moscow, Russia.