Sebastián Marcelo Blanco (born 15 March, 1988 in Lomas de Zamora) is an Argentine football midfielder. He currently plays for Club Atlético Lanús in Argentina.
Blanco made his breakthrough into the Lanús 1st team in 2006, in 2007 he was part of the squad that won the Apertura 2007 championship, the first top flight league title in the clubs history