Vacoas-Phoenix also known as French: Villes Jumelles, is a town in Mauritius, located in the Plaines Wilhems District, the eastern part also lies in the Moka District. The town is administered by the Municipal Council of Vacoas-Phoenix. The town lies between Quatre Bornes and Curepipe.

Plaines Wilhems is a district of Mauritius. It is the most populous district, with an estimated population of 366,506 at the end of 2018. The district is mainly urban; it consists of four towns, the village of Midlands and part of two other villages. The Plaines Wilhems district does not have a District Council; it has four Municipal Town Councils. The towns are Beau-Bassin Rose-Hill, Curepipe, Quatre Bornes and Vacoas-Phoenix. The villages are Midlands, Cascavelle and Moka. The district was named after Wilhem Leicknig. Of Prussian origin, he settled on the island of Mauritius, then known as Isle de France, in 1721.