Rodolfo "Rudy" Valentino Padilla Fernandez (born March 3, 1953, screen name Rudy Fernandez — June 7, 2008), also known as "Daboy", was a multi-awarded Filipino actor and producer. He came to prominence as an action star in the Philippine cinema during the 1980s up to the early 1990s.

Fernandez was born in Manila, the son of film director Gregorio Fernandez. Both his parents were from Lubao, Pampanga, which he considered his hometown. He made his film debut at the age of three, appearing in Luksang Tagumpay (1956), which was directed by his father. He also appeared in another film of his father's, Emily (1960).

Fernandez started his active film career while a student at the University of Santo Tomas, when he was signed to a contract by Sampaguita Pictures in 1970. He was first featured by Sampaguita Pictures in For Your Mama (1970), then paired with Connie Angeles in Sweet Matutina (1976). Fernandez spent the next few years in teenage parts until he made his breakthrough as an action star with Bitayin si Baby Ama (1976). His viability as an action star was further enhanced with the box-office success of Ang Leon, Ang Tigre at ang Alamid (1979).