The men's 100m butterfly events at the 2023 World Para Swimming Championships were held at the Manchester Aquatics Centre between 31 July and 6 August.
The swimmers with the top eight times, regardless of heat, advanced to the final.
The swimmers with the top eight times, regardless of heat, advanced to the final.
The swimmers with the top eight times, regardless of heat, advanced to the final.
The swimmers with the top eight times, regardless of heat, advanced to the final.