The men's 200 metre butterfly event at the 2024 Summer Olympics was held from 30 to 31 July 2024 at Paris La Défense Arena, which was converted to a swimming pool for the swimming events.
Going into the event, Kristóf Milák was considered the most likely to win by SwimSwam and Swimming World, but he had taken a break from swimming in 2023, and the Hungarian national head coach had reported that Milák had been training inconsistently. Second in contention was France's Léon Marchand. In the heats (preliminary rounds), Japan's Tomoru Honda, the silver medalist at the previous Olympics, was eliminated. In the semifinals, Kregor Zirk broke the Estonian national record, and Noè Ponti broke the Swiss national record.