Paul-Marie-Adolphe Costermans (2 April 1860 – 9 March 1905) was a Belgian soldier and colonial civil servant.
After a brief career in the Belgian Army, Costermans enlisted for service in the military of the Congo Free State, the Force Publique, in 1890 and later served in the colony's administration.
During several periods of service in the colony, Costermans rose through the ranks.
Between 1904 and his death in 1905, he held the position of Vice Governor-General of the Congo.