The men's 100 metre backstroke S7 event at the 2016 Paralympic Games took place on 8 September, at the Olympic Aquatics Stadium.

Two heats were held, each with five swimmers. The swimmers with the eight fastest times advanced to the final.

Prior to the competition^[update], the existing World and Paralympic records were as follows.

World record	Jonathan Fox (GBR)	1:09.15	Sheffield, Great Britain	27 July 2016
Paralympic record	Jonathan Fox (GBR)	1:09.86	London, Great Britain	30 August 2012
2016 World leading	Jonathan Fox (GBR)	1:09.15	Sheffield, Great Britain	27 July 2016

• "Men's 100m Backstroke - S7". Rio 2016 Paralympic Games. Retrieved 8 September 2016.^{[permanent dead link]}