Sascha Gueymard Wayenburg (born 1 August 2003) is a French tennis player.

[1] Gueymard Wayenburg made his ATP Tour debut and registered his maiden ATP win by reaching the quarterfinal at the 2022 Open Sud de France after receiving a wildcard into the doubles main draw with Luca Van Assche.

[citation needed] He made his Grand Slam debut in doubles at the 2022 French Open as a wildcard pair also partnering with Luca Van Assche.

[citation needed] Gueymard Wayenburg won his maiden Challenger doubles title at the 2024 Open d'Orléans, partnering with Benjamin Bonzi.

[citation needed] Gueymard Wayenburg won his first career Challenger singles title as a qualifier in Quimper, defeating defending champion Pierre-Hugues Herbert in the final.