Ricardo Martins de Araújo (born 20 July 1986), commonly known as Kadu, is a Brazilian professional footballer who plays as a central defender for Chapecoense.
Kadu started his career in Bragantino since the 2006 season. In 2007 Kadu have good actions with Bragantino (fourth place in Campeonato Paulista), and signed to Corinthians, to play Brazilian League.
For Corinthians, Kadu started in the match against Sport Recife, in a nightmare game Kadu scored an own goal against Atlético Paranaense. Before this fact, and the exit of the coach, Paulo César Carpegiani, Kadu had never played any other game for the club.