Aleksa Ukropina (born 28 September 1998) is a water polo player of Montenegro.
Aleksa started playing water polo at PVK Jadran, and he is a member of a first squad since 2013.
Aleksa is playing for PVK Jadran in competitions like Montenegrin First League of Water Polo, Montenegrin Water Polo Cup, LEN Champions League , Adriatic water polo league.
Aleksa also plays for a senior Montenegro men's national water polo team.
He played at 2015 World Aquatics Championships in Kazan and won a 5-th place, 2017 World Aquatics Championships in Budapest and won 5-th place.