Mario Casas Sierra (born 1986) is a Spanish film and television actor known for his work in Spanish cinema and television. He has received several major accolades, including a Goya Award, two Gaudí Awards, and three Feroz Awards. Casas first gained wide attention through the Antena 3 series Los hombres de Paco and later through the popular film Three Steps Above Heaven, and he has since moved into international productions and directing.
Early career

Casas began appearing in soap operas in 2005 and made his film debut in Summer Rain in 2006, directed by Antonio Banderas. He reached a wider Spanish audience with the television series Los hombres de Paco, which he starred in from 2007 to 2010. In 2009 he appeared in two hit films, Brain Drain and Sex, Party and Lies, and in 2010 he starred in Three Steps Above Heaven, which became the highest-grossing Spanish film of that year.
Later work
Casas went on to star in the series El barco and in numerous films, including The Invisible Guest and The Photographer of Mauthausen, in which he lost considerable weight for the role. He also appeared in the English-language projects Eden and The 33. His leading performance in Cross the Line earned him his first Goya Award for Best Actor, and in 2023 he made his debut as a director with Caged Wings.
