Caroline Cayeux (born November 1, 1948 in Paris) is a French politician and Mayor of Beauvais (Oise). She is a member of the Union for a Popular Movement (UMP).
She became Departmental President of the Rally for the Republic in 1998, after the incumbent, Jean-François Mancel was forced to resign for entering into an electoral and political alliance with the far-right FN.
She defeated the incumbent Socialist Mayor of Beauvais Walter Amsallem in the 2001 election and was re-elected with 58% in 2008 against Sylvie Houssin of the PS.
She was defeated as a RPR dissident candidate in the French legislative election, 2002 and as a candidate on the UMP list in the 2004 Senate election. She became regional councilor of Picardy in 2004, on the UMP-UDF list of Gilles de Robien.
She was the only candidate for the UMP nomination in Picardy for the 2010 regional elections and will thus be the UMP's top candidate.