Mario Ermirio de Moraes Filho (born December 20, 1988) is a Brazilian professional race car driver. Moraes started his career in minor youth motorsports. In 2003, Moraes competed in American Formula Renault with World Speed Motorsports and won races against some competition such as Marco Andretti. In 2005, he drove for the Bassan Motorsport team in Formula Three Sudamericana and finished eighth.
In 2006, he finished second in F3 Sudamericana, then moved to the British Formula Three National Class driving for Carlin Motorsport and earned several good finishes while not competing for series points. He finished in fourteenth place in the 2007 British Formula Three championship's Championship Class, again competing for Carlin.
In 2008, Moraes drove in the IndyCar Series for Dale Coyne Racing. He finished 21st in points with a best finish of seventh at Watkins Glen International.
Moraes drove for KV Racing Technology in 2009, with a best finish as third at Chicagoland.
() (Races in bold indicate pole position)