Britain's Got Talent series 18

The eighteenth series of British talent competition programme Britain's Got Talent was broadcast on ITV from 22 February 2025 and concluded on 31 May 2025; due to live coverage of the final match weekend of the 2025 Six Nations Championship, on 15 March 2025, the fourth audition episode of the series was pushed back by a week. Additionally, due to BBC One and ITV's shared live coverage of the 2025 FA Cup final and BBC One's live coverage of the 2025 Eurovision Song Contest final, on 17 May 2025, the fourth semi-final was pushed back a day to avoid clashes. Auditions took place in Blackpool, between October 2024 and January 2025, rather than London, for the first time in the show's history, with internet personality, boxer and rapper KSI partially replacing Bruno Tonioli, who was unavailable due to his commitments in America with Dancing with the Stars; he also stepped in for Simon Cowell, who stepped down following the death of Liam Payne.

The series is notable for airing in February, rather than April, with the audition episodes filling in the gap in the schedule left by Ant & Dec's Saturday Night Takeaway, which entered indefinite hiatus, following the end of its twentieth series, in April 2024. Additionally, the live semi-finals were aired weekly on Saturday nights (with the exception of the fourth), from 26 April, with the live final airing on 31 May 2025.

The eighteenth series was won by magician Harry Moulding, with dance group The Blackouts as runners-up, and dancer Binita Chetry finishing in third place.