Lukáš Vácha (born 13 May 1989) is a Czech football midfielder, who currently plays for the reserve team of Czech side AC Sparta Prague B.
He has been on loan to Jablonec and Baník Ostrava in previous seasons.
He is member of the Czech under-21 team.
He represented the team at the 2011 UEFA European Under-21 Football Championship.
He made his national debut for Czech Republic on 21 May 2014 in a friendly match against Finland.