Diego Dionisio Luna Alexander is a Mexican actor, director, and producer. He is known for his portrayal of Cassian Andor in Rogue One: A Star Wars Story and the Disney+ series Andor, for which he was nominated for a Golden Globe Award for Best Actor - Television Series Drama.

Cassian Jeron Andor, born Kassa, is a fictional character in the Star Wars franchise, primarily portrayed by actor Diego Luna. Introduced in the feature film Rogue One (2016) as a co-lead, he is the protagonist of the ongoing prequel television series Andor (2022–present).