Colosimi (Central Calabrian: Culuòsimi) is a town and comune (municipality) in the province of Cosenza in the Calabria region of southern Italy.

The region is presented as a set of eleven small villages, including the capital, established in the 17th century.

Colosimi is potentially Greek in origin, being formed from the words 'colosi' (more correctly spelt as 'colossi' and being the plural of "colossus") and 'mi' (meaning 'me').

The first Colosimi administrative autonomy (1811) was related to the political strength of the city-owned University of Scigliano.

In 1813, Colosimi became home to the oldest Masonic Workshop, namely the Mamertini lodge, which, together with the Ginnosofisti silani di Carlopoli and the La Sila di Decollatura, can be called the cultural forges of these upland moors in the nineteenth century.