Vaai "Jason" Taumalolo (born 31 May 1993) is a professional rugby league footballer who captains and plays as a lock or second-row forward for the North Queensland Cowboys in the NRL. He has played for Tonga and New Zealand at international level. Taumalolo played for the NRL All Stars and he was a member of the Cowboys' 2015 NRL Grand Final and 2016 World Club Challenge winning sides, and won the Dally M Medal in 2016.