Stanislas Wawrinka, Swiss tennis player
Stanislas "Stan" Wawrinka (French: [stanislas vavʁiŋka]; born 28 March 1985) is a Swiss professional tennis player. He reached a career-high Association of Tennis Professionals (ATP) singles ranking of world No. 3 for the first time on 27 January 2014. His career highlights include three Grand Slam titles at the 2014 Australian Open, 2015 French Open and 2016 US Open, where he defeated the world No. 1 player in the final on all three occasions. Other achievements include reaching the final of the 2017 French Open, an ATP Tour Masters 1000 title at the 2014 Monte-Carlo Masters, and three other Masters finals (at 2008 Rome, 2013 Madrid and 2017 Indian Wells). Representing Switzerland, Wawrinka won gold in doubles at the 2008 Beijing Olympics with teammate Roger Federer, and was also pivotal in the Swiss team's victory at the 2014 Davis Cup.

Wawrinka considers clay his best and favorite surface, and his serve and backhand his best shots. John McEnroe once said that Wawrinka has one of the most powerful backhands ever, and in 2009 said he possessed "the best one-handed backhand in the game." He has been described by The Economist as "Tennis's great latecomer", owing to finding success late in his career. Prior to the 2014 French Open, he requested and was granted a formal change in his name from "Stanislas Wawrinka" to "Stan Wawrinka", stating that he plans to use the abbreviated name in tournament draws and press conferences.