Brett Graham Randell (born 20 May 1995) is a New Zealand cricketer who plays domestic cricket for Northern Districts. Before beginning his senior career, he was selected as part of New Zealand's squad for the 2014 Under-19 Cricket World Cup.
Randell made his List A debut for Northern Districts on 18 January 2017 in the 2016–17 Ford Trophy. He followed this with his first-class debut for the same side on 21 March 2017 during the 2016–17 Plunket Shield season. Later that year, on 15 December 2017, he made his Twenty20 debut for Northern Districts in the 2017–18 Super Smash. In June 2018, he was awarded a contract with Northern Districts for the 2018–19 season.
In March 2023, Randell earned his maiden call-up to the New Zealand A cricket team for their first-class series against Australia. In August 2024, he signed with Somerset County Cricket Club as an overseas player for the final three fixtures of their 2024 County Championship Division One campaign.
On 8 March 2026, Randell took five wickets in five balls in a Plunket Shield match, becoming the first player to achieve the feat in first-class cricket.