Susan Ayn, born Petra S. on October 11, 1991, in Jihlava, Czech Republic, is a retired Czech adult film actress. She entered the industry in 2013 at age 21 after working in local restaurants and nightclubs following secondary school.
Scouted by Prague agents, she debuted under aliases like Suzen Sweet and Crazy-Sophia, later standardizing as Susan Ayn. Standing 5'8" (173 cm) tall with 32AA-23-34 measurements, brown hair and eyes, and no tattoos or piercings, Ayn specialized in anal, DP, DAP, squirting, and group scenes. She collaborated with studios including 21Sextury, Evil Angel, Private, Legal Porno, and Pornbox, amassing over 200 scenes by 2022.
Nominated for AVN Best New Starlet (2014), XBIZ, and Venus Awards, her career highlighted Czech talent in European porn. Post-retirement life remains private.