The 2021 Men's Rugby League World Cup was the 16th Rugby League World Cup, and one of three major tournaments of the 2021 Rugby League World Cup. The tournament was held in England from 15 October 2022 to 19 November 2022. It was originally due to be held between 23 October 2021 and 27 November 2021, but the COVID-19 pandemic and the subsequent withdrawals of Australia and New Zealand caused the tournament to be postponed. 16 teams competed in the tournament, an increase of two from the previous two tournaments and the first to feature 16 teams since the 2000 Rugby League World Cup.

The 2021 Rugby League World Cup (RLWC2021) was a collection of world cups in the sport of rugby league, held in England from 15 October to 19 November 2022.