Lewis Chessum (born 27 February 2003) is an English professional rugby union player.

[5] Chessum made his debut for England under-20s on 1 March 2022 in a win against Wales during the 2022 Six Nations Under 20s Championship.

[8][9] Later that year Chessum led the side to a fourth place finish at the 2023 World Rugby U20 Championship.

[10] On 29 January 2025 it was announced that Chessum had signed a new contract at Leicester, and also joined Mitsubishi Sagamihara DynaBoars on loan for the 2025 season.

[11] He is the younger brother of full England rugby union international Ollie Chessum.