Finnley Hugh Allen (ফিন অ্যালেন) is a New Zealand International cricketer who plays international cricket for New Zealand in the One Day International and Twenty20 International formats of the game. He plays as a top order batter who can also keep wicket. He plays domestic cricket for Auckland, having previously played for Wellington, and has played in a variety of T20 franchise leagues.

Allen made his Twenty20 debut for Auckland in the 2016–17 Super Smash on 3 January 2017. Prior to his Twenty20 debut, he was named in New Zealand's squad for the 2016 Under-19 Cricket World Cup.

Allen made his List A debut for Auckland in the 2017–18 Ford Trophy on 17 February 2018. He made his first-class debut for Auckland in the 2017–18 Plunket Shield season on 9 March 2018. In September 2018, he was named in the Auckland Aces' squad for the 2018 Abu Dhabi T20 Trophy. In November 2019, in a tour match for the New Zealand XI against England, Allen scored an unbeaten century.

In June 2020, Allen was offered a contract by Wellington ahead of the 2020–21 domestic cricket season, coming into his own as the tournament leading run-scorer (512, SR 194) as Wellington defended their Super Smash title. Opening partner Devon Conway (455) was second. In March 2021, he was signed by Royal Challengers Bangalore as Josh Philippe's replacement for the 2021 Indian Premier League.

In December 2017, Allen was named in New Zealand's squad for the 2018 Under-19 Cricket World Cup. He scored the first century of the tournament, with 115 not out against the West Indies on the opening day of the competition. In New Zealand's second game of the tournament, against Kenya, Allen scored a half-century off just 19 balls, the joint-second quickest in Under 19 ODI history. He was the leading run-scorer for New Zealand in the tournament, with 338 runs.

In March 2021, Allen was named in New Zealand's Twenty20 International (T20I) squad for their series against Bangladesh. He made his T20I debut for New Zealand on 28 March 2021, against Bangladesh, scoring 71 in 29 balls in his 3rd game, opening with Martin Guptill. In August 2021, Allen was named in New Zealand's One Day International (ODI) squad for their tour of Pakistan.

In June 2022, Allen was named in New Zealand's ODI squads for their tours of Ireland and Scotland. He made his ODI debut on 10 July 2022, for New Zealand against Ireland. On 27 July, in New Zealand's first match against Scotland, Allen scored his first century in T20I cricket.