The Departmental Council of Yvelines (French: Conseil départemental des Yvelines) is the deliberative assembly of the Yvelines department.

Its headquarters are in Versailles in the Hôtel de la Préfecture.

Pierre Bédier (LR) is the president of the departmental council since July 2021.

[1][2] The president of the departmental council is assisted by 12 vice-presidents chosen from among the departmental advisers.

The departmental council of Yvelines includes 42 departmental councilors from the 21 cantons of Yvelines.