Senne Lammens (সেনে লামেন্স) is a Belgian professional footballer who plays as a goalkeeper for Premier League club Manchester United.

Lammens came through the youth systems of KRC Bambrugge, Dender and Club Brugge. On 3 October 2018 he was included in the first-team matchday squad for the UEFA Champions League group match away to Atlético Madrid, aged 16.

On 11 December 2019, then 17-year-old Lammens scored a stoppage-time headed equaliser to make it 2–2 for Club Brugge's under-19s against Real Madrid's under-19s in the UEFA Youth League group stage; the result secured Brugge's progress to the knockout phase.

He featured for Club NXT—Club Brugge's U23 side—in the First Division B during the 2020–21 season, the team's debut campaign at that level.

On 8 June 2023, Lammens left Club Brugge at the end of his contract and signed a four-year deal with Antwerp, then the reigning Belgian champions. He made his senior Antwerp debut on 1 November 2023, starting a 4–1 Belgian Cup win away to Lierse; coach Mark van Bommel had indicated beforehand that Lammens would be considered for the tie.

During the 2023–24 season he served primarily as understudy to Jean Butez, featuring again in the domestic cup, including a December tie against Lierse. By the start of the 2024–25 season he had established himself as Antwerp's first-choice goalkeeper ahead of Butez, a change noted widely in Belgian coverage.

On 1 September 2025, Manchester United signed Lammens in a deadline day move from Royal Antwerp for a reported transfer fee of £18.1m.

Lammens made his debut on 4 October 2025 and kept the first clean sheet of the season for Manchester United against newly promoted Sunderland in a 2–0 home victory.

In March 2025, Lammens was named in the senior Belgium squad for the 2024–25 UEFA Nations League play-off matches against Ukraine on 20 and 23 March 2025 respectively.