Sibel Siber (born 13 December 1960) is a Turkish Cypriot politician.
She served as the Prime Minister of Northern Cyprus between 13 June 2013, following the fall of the government of Irsen Küçük in a vote of no confidence, and 2 September 2013.
She was the first woman to occupy this post.
As of November 2015, Siber was the Speaker of Parliament, the Assembly of the Republic of Northern Cyprus.
She was the second woman to occupy this post, after Fatma Ekenoglu.