| September 8, 1973|
8 September 1973
| 55.69 CR|
The men's 100 metre butterfly competition of the swimming events at the 1973 World Aquatics Championships took place on September 8.
Swimming at the 1973 World Aquatics Championships – Men's 100 metre butterfly Wikipedia
Prior to the competition, the existing world and championship records were as follows.
The following records were established during the competition:
?? swimmers participated in 4 heats.1
Roland Mattes had to withdraw from the event following a poolside accident when he slipped and sprained his ankle.
The results of the final are below.