Grégoire Barrère (French pronunciation: ; born 16 February 1994) is a French professional tennis player.
Barrère has a career high ATP singles ranking of no. 115 achieved on 17 June 2019. He also has a career-high ATP doubles ranking of no. 203 achieved on 1 July 2019. Barrère has won three ATP Challenger Tour singles titles and six ITF Futures singles titles as well as three Challenger doubles titles and six ITF Futures doubles titles in his career.
Barrère made his Grand Slam main-draw debut at the 2016 French Open, where he received a wildcard, but lost to David Goffin in the first round. He was awarded a wildcard to the 2018 French Open, where he lost in the first round after leading 2 sets to 0, then again in 2019 when he reached the second round and lost in 4 sets to 10th seed Khachanov after winning the third set 6-0.