Shahriyar Hamid oglu Mammadyarov (Azerbaijani: Şəhriyar Həmid oğlu Məmmədyarov; born 12 April 1985), known internationally as Shakhriyar Mamedyarov, is an Azerbaijani chess grandmaster. As of July 2025, he is Azerbaijan's highest rated chess player. His personal best rating of 2820 makes him the sixth-highest-rated player in chess history. Mamedyarov has competed in the Candidates Tournament in 2011 (eliminated in quarterfinals), in 2014 (placing fourth) and in 2018 (placing second). He is a two-time World Junior Champion (2003 and 2005) and was World Rapid Champion in 2013. A gold medalist at the 2012 Chess Olympiad on the third board, he is a three-time European Team Champion (2009, 2013, 2017) with Azerbaijan. He is also a two-time winner at Tal Memorial (2010 joint and 2014 Blitz) and Shamkir Chess (2016 and 2017), as well as the winner of 2018 Biel Chess Festival where he beat reigning World Champion Magnus Carlsen.