1923–1941 Since establishment in 1923, Jug was one of the most successful water polo clubs in Yugoslavia. It won fourteen
Yugoslav Water Polo Championship titles in Kingdom of Yugoslavia.
1945–1991 During the existence of SFR Yugoslavia, Jug was among the elite Yugoslav water polo clubs, winning a total of eights Yugoslav Water Polo Championship titles; three in a row from 1949 to 1951, four in a row from 1980 to 1983, and their last one in 1985. Jug also won its first European title, the
Champions Cup, in 1981. It also won the National Cup of Yugoslavia in 1981 and 1983.
1991–2008 After the
breakup of Yugoslavia in 1991, Jug won six
Croatian First League of Water Polo championships and eight
Croatian Water Polo Cup titles until the 2007–08 season. It cemented its dominance in Croatia by winning the top-tier continental
2000–01 LEN Champions League and
2005–06 LEN Euroleague titles. Dubrovnik City Council honoured the club in 1997 with the City of Dubrovnik Award.
2008–present In the 2008–09 season, Jug won the inaugural season of the
Regional Water Polo League. From 2009–10 to 2014–15, Jug was five-time runner-up in the competition and finished in third place once. In Croatia, it won five consecutive championship titles from 2008–09 to 2012–13 and Croatian Cup in the 2008–09 season. In the 2015–16 season, Jug set a record by winning all competitions it played in. After taking the Croatian League championship and Croatian Cup title, Jug won the Regional Water Polo League for the second time in club's history and was crowned the
2015–16 LEN Champions League champion for fourth time in club's history. ==Honours==