Bjorn Fratangelo (/biˈɔːrn frəˈtændʒəloʊ/ bee-ORN frə-TAN-jə-loh; born July 19, 1993) is a professional American tennis player who won the boys' singles title at the 2011 French Open. Fratangelo is only the second American out of three to win the event, following John McEnroe in 1977 and preceding Tommy Paul in 2015. Fratangelo was a singles semifinalist at the 2017 Hall of Fame Tennis Championships.
Fratangelo began playing tennis at age three and is named after tennis champion Björn Borg. His father, Mario, is his coach. Fratangelo attended St. John the Baptist School in Plum, Pennsylvania until the 8th grade when he moved to Naples, Florida for training reasons, and was an online student of Barron Collier High School.
Fratangelo won the boys' singles title at the 2011 French Open, beating Dominic Thiem in the final, 3–6, 6–3, 8–6. The win propelled him to a career high of no. 2 in the junior rankings. He also played in the junior championship at the 2011 US Open, losing to eventual champion Oliver Golding in three sets.