Lucas dos Santos Rocha da Silva (born 15 July 1991), commonly known as Lucas Rocha or just Lucão, is a Brazilian professional footballer who plays as a defender for Brazilian club Comercial.
A youth graduate from Portuguesa, his performances at early age led to a move abroad, joining Bayer Leverkusen on 17 July 2010, signing a two-year deal, while finishing the season at Portuguesa. In January 2011, he moved on a loan deal to 1. FC Kaiserslautern, but did not make an appearance.
A free agent, he joined Vasas on 4 September 2012, playing 19 games as starter, scoring once. A year later, he moved, this time to Kaposvár in the Hungarian league. On 27 June 2014, Lucas Rocha moved to his fourth club in same number of years, joining Boavista in Portugal.