The 2017 FIBA Melanesian Basketball Cup was an international men's basketball tournament contested by national teams of the newly formed Melanesian sub-zone of FIBA Oceania. The inaugural edition of the men's competition was played together alongside the women's tournament at the Taurama Aquatic and Indoor Centre in Port Moresby, Papua New Guinea, from 27 to 30 September 2017. It was officially launched on 19 May 2017.
The tournament also served as qualifiers for the men's basketball event of the 2019 Pacific Games in Samoa with three berths for Melanesia allocated for the top three teams of this tournament.
The hosts dominated the entire tournament winning all of their games, including the championship game against to win the maiden championship. Both finalists and the third-placer qualified for and represented the Melanesia Region at the basketball tournament of the 2019 Pacific Games.
The following national teams participated in the tournament according to FIBA.
All times are local (Papua New Guinea Standard Time; UTC+10).
Papua New Guinea dominated the preliminary round with an unbeaten record.