Adrian Andreev (Bulgarian: Адриан Андреев, born 12 May 2001) is a professional Bulgarian tennis player.
As a junior, Andreev won the 2017 Eddie Herr Junior Championships both in singles and in doubles. In 2018, Andreev won the Junior title at US Open in doubles with Anton Matusevich, becoming the second Bulgarian to win US Open after Grigor Dimitrov (who did so in 2008, in Singles). Andreev went then to semifinals in singles and to the final in doubles at the 2018 Summer Youth Olympics. In 2018, Andreev also won the bronze medal of the end-of-year junior competition, the ITF Junior Masters.
Andreev made his debut at ATP level at the age of 15, when he received a wild card for the qualifications of the 2016 Moselle Openhe , where he lost to Michael Berrer. Andreev played at the 2017 Sofia Open in his homeland, losing in two sets to Maximilian Marterer in the qualifications. Next year, Andreev received another wild card, this time for the main draw of the Sofia event, but lost to Denis Istomin. The Bulgarian became the first player born in 2001 to play in the main draw of the ATP World Tour. In the 2019 Sofia Open, Andreev was granted another wild card for the main draw. The 17-year Bulgarian pushed world No. 45 Matthew Ebden to three sets, but ultimately lost in the third set tie-break.