The Men's 100 metre breaststroke SB4 event at the 2016 Paralympic Games took place on 11 September 2016, at the Olympic Aquatics Stadium. No heats were held. The swimmers with the eight fastest times advanced to the final.

Final 19:56 11 September 2016:

Rank Lane Name Nationality Time Notes 2 1:35.96 3 1:36.13 5 1:37.40 4 4 1:37.69 5 6 1:38.07 6 1 1:49.67 7 8 1:51.96 7

Notes