The 2018 World Rugby Americas Pacific Challenge was the third tournament of the Americas Pacific Challenge, which is a development competition for the Americas and Pacific island nations.

The competition was hosted by Uruguay with all games played at the 14,000 capacity stadium Estadio Charrúa in Montevideo.

Samoa A won the tournament for the first time, winning all three of their matches.

[1] With six teams in the tournament and a limitation of three matches per team, a "split pool" format was used.

The competing teams were:[2] Pool A Pool B Final standings for combined pools: All times are local UYT (UTC-03) The matches were announced on 22 August 2018.