Marlon Javier Piedrahita Londoño (born 13 June 1985) is a Colombian professional footballer who plays as a right back for Once Caldas. He can also play as a defensive midfielder. He was a member of Colombia U-20 in 2002 and 2003.

Atlético Nacional

• Categoría Primera A (2): 2007–I, 2007–II

Independiente Medellín

• Categoría Primera A (1): 2016–I

Junior

• Categoría Primera A (2): 2018–II, 2019-I
• Copa Colombia (1): 2017
• Superliga Colombiana (2): 2019, 2020

• Marlon Piedrahita at ESPN FC
• Marlon Piedrahita at BDFA (in Spanish)