Javier Barranco Cosano (born 17 November 1998) is a Spanish tennis player who competes on the ATP Challenger Tour. He has a career-high ATP singles ranking of world No. 211 achieved on 28 October 2024 and a doubles ranking of No. 258 achieved on 12 November 2018.
He made his ATP main draw debut at the 2024 Lyon Open after entering the singles main draw as a lucky loser, losing to Dominik Koepfer in the first round.