Sylvie Von Duuglas-Ittu (born 3 November 1983) is an American professional Muay Thai fighter.

[1] Duuglas-Ittu discovered Muay Thai in Boulder, Colorado, before started training under veteran fighter Kumron Vaitayanon (Master K) in New Jersey.

[4] After receiving a Liberal Arts degree from Sarah Lawrence College, she moved permanently to Thailand in 2012 to train and fight.

[5] In May 2019 and in 2020, on two separate occasions, she won the International Professional Combat Council (IPCC) World 108 lbs title.

[8] On 4 February 2023, in Hua Hin, Thailand, she became WBC Muay Thai Minimumweight World Champion after defeating Elisabetta Solinas of Italy.