Serge Betsen Tchoua (born 25 March 1974) is a former French rugby union player who played as a flanker for London Wasps and Biarritz at club level and for France internationally.

[1] Born in Kumba, Cameroon, of partial Bamileke heritage, Betsen moved to France with his mother and six siblings when he was nine, settling in the Clichy suburb of Paris.

Betsen's finest moment came during the 2002 Six Nations Championship, in the match against England, when his relentless man-marking of Jonny Wilkinson eventually resulted in the fly-half's replacement and paved the way for a 20–15 victory.

[4] Betsen was renowned as a fearless tackler,[2] but with increasing age he started to pick up more frequent injuries and he missed the 2005 Autumn internationals after fracturing his cheekbone in a match against Toulouse.

During the 2009 6 Nations championship he was made Wasps captain in the absence of the senior England players and friend Rafa Ibanez (though retirement caused by injury).