Silvia Collas (née Aleksieva; born 4 May 1974) is a Bulgarian-French chess player who holds the titles of International Master (IM) and Woman Grandmaster (WGM).

In December 2002, she transferred to the French Chess Federation and since then represents France.

[3] In 2007 Collas became the French women's champion after winning a rapidplay playoff with Sophie Milliet.

In the 2012 event Collas won an individual silver medal thanks to her rating performance of 2469 on board 4.

This biographical article relating to a French chess figure is a stub.