The 2018 FIBA Polynesian Basketball Cup was an international basketball tournament contested by national teams of the newly formed Polynesia sub-zone of FIBA Oceania. The inaugural edition of the tournament was hosted by Samoa from 19 to 24 November 2018. Matches were played at the NUS Gymnasium. The tournament serves as qualifiers for the basketball events of the 2019 Pacific Games in Samoa with three berths for Polynesia allocated for the top three teams, excluding Samoa, in this tournament.