Tom Allen (born 23 July 2004) is a New Zealand rugby union player, who currently plays as a lock for in New Zealand's domestic National Provincial Championship competition and the in Super Rugby.
Allen attended Hastings Boys' High School and played 1st XV rugby for the school, alongside his twin brother, Reuben Allen. Since finishing his secondary school education, he has played premier club rugby for Havelock North Rugby Club.
Allen represented Hawke's Bay at age grade level, including the Hawke's Bay U18 team in 2022 and the U19 team in 2023, and was part of the Hawke's Bay Academy.
In September 2022, Allen was selected in the U18 squad for a Super Rugby Development Camp. Half a year later, he was named in the Hurricanes U20 team for the Super Rugby U20 competition in Taupà Â. The Hurricanes U20s finished the 2023 tournament in second place.
At only 19 years old, Allen was named in the squad for the 2023 Bunnings NPC season. He made his debut for the Magpies on 16 August 2023 against . That was his only game for the province in two seasons. He was again named in the squad for 2024, but didn't get any game time that season.
In March 2024, he was for the second year named in the Hurricanes U20 squad for the Super Rugby U20s tournament. The team ended the 2024 tournament in third place.
Prior to and during the 2024 Super Rugby Pacific season, Allen trained with the while on a National Development Contract. On 27 June 2024, the Hurricanes announced that the franchise had signed Allen until the end of 2026 on a full contract.
On 21 July 2025, Allen was named in the squad for the 2025 Bunnings NPC season, on loan from . He made his debut for Aucklandvia the benchon 31 July 2025 against .
On 7 October 2022, Allen was named in the New Zealand Schools squad for two matchesagainst the NZ MÃÂori U18 team and Fiji Schools to be played at a New Zealand Under 18 Quadrangular Tournament in Hamilton.
The following year, Allen was for the first time named in the New Zealand Under 20 team. He played in both games of a two-test series against Australia and competed at the 2023 World Rugby U20 Championship.
In 2024, Allen was selected in the New Zealand Under 20 team again, winning the inaugural U20 Rugby Championship and finishing the 2024 World Rugby U20 Championship in third place.