Mali Prolog is located in the municipality Pojezerje, in Dubrovnik-Neretva County at an elevation of 80 meters above sea level and it covers the area of 5.16 km² (1.99 sq. miles). According to the 2011 census report, there were 31 inhabitants. It is predominantly populated by Croats (97%), but also. Nearby places: Kobiljača, Brečići, Pozla Gora, Otrić-Seoci, Dubrave, Staševica, Plina Jezero, Veliki Prolog, Borovci and Draževitići.