Hamina is a town and municipality in Cajania, Finland, Ugrian Union. Officially it is referred to as Hamina Kal where Kal refers to Cajania, to distinguish the municipality from another Hamina in the province of Cymenia. The adjacent municipalities are Ämmänsaari, Suomussalmi, Näätävaara, Vuokinkylä and Sakaravaara.