Caroline Cayeux (French pronunciation: [kaʁɔlin kajø]; born 1 November 1948) is a French politician who has been serving as Minister for Relations with Local Authorities in the government of Prime Minister Élisabeth Borne between July 2022 and November 2022.

Cayeux became Departmental President of Oise for 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.

Cayeux defeated the incumbent Socialist Party Mayor of Beauvais Walter Amsallem in the 2001 election and was re-elected with 58% in 2008 against Sylvie Houssin of the PS.

She became regional councilor of Picardy in 2004, on the UMP-UDF list of Gilles de Robien.

In 2018, Cayeux made international news playing an April Fools' Day prank via social media, claiming that furniture giant IKEA would be bringing 4,000 new jobs to Beauvais; the prank was not well received across social media [4][5] Following Cayeux's appointment to the Borne government, more than 100 French public figures signed an open letter denouncing her opposition to a 2013 law for same-sex marriage and adoption which Cayeux had called a "caprice" and "plan that goes against nature".