Sébastien Siani (born 21 December 1986) is a Cameroonian[2] professional footballer who plays as a midfielder for Belgian National Division 1 club Knokke.

Siani played four years for the Kadji Sports Academy, before transferring to Union Douala in July 2004.

Siani moved to Europe joining Anderlecht in July 2005 before leaving for Zulte-Waregem on a half-year loan a year later.

[5] In July 2021, after being a free agent for a year, Siani signed a two-year contract with Knokke.

[6] Siani debuted for the Cameroon national football team in a friendly against Nigeria on 10 October 2015.