Bárbara Rocío Comba (born 14 July 1987) is an Argentine discus thrower. She was born in Río Tercero. As a teenager she competed in the shot put, and finished tenth at the 2003 World Youth Championships and eighth at the 2006 World Junior Championships. Her personal best throw is 16.59 metres, achieved in July 2006 in São Caetano do Sul. Her personal best is 62.77 metres, achieved in May 2013 in Belém, Brazil.