Collines is one of the twelve departments of Benin. Collines was created in 1999 after the Benin government split up the former six departments of Atakora, Atlantique, Borgou, Mono, Oueme and Zou into twelve. Collines was split from Zou. Since 2008, the capital is Savalou. The departments that border Collines are Plateau, Borgou, Zou, and Donga.
Collines is divided into the communes of Bantè, Dassa-Zoumè, Glazoué, Ouèssè, Savalou, and Savé.