The Men's 100m athletics events for the 2020 Summer Paralympics took place at the Tokyo National Stadium from 27 August to 4 September 2021.

Athletes in this category have a variety of visual impairments, but can typically recognize contours from a distance of 2 to 6 metres.

Athletes in this category have minimal limitations or control problems in their arms and trunk while pushing a wheelchair.

The final in this classification took place on 30 August 2021, at 10:43:[7] The T35 category is for ambulant athletes with cerebral palsy.

The final in this classification took place on 30 August 2021, at 19:04:[8] The T36 category is for ambulant athletes with cerebral palsy.

The final in this classification took place on 28 August 2021, at 19:35:[11] The T47 category is for athletes who have a single below elbow or wrist amputation or similar disability, with normal function in both legs.

The final in this classification took place on 27 August 2021, at 19:33:[12] The T51 category is for wheelchair athletes having spinal cord injuries, with mild weakness in shoulders, limited ability in straightening elbows and wrist function, and no finger, trunk or leg function.

Pushing power comes from elbow extensions, and appears close to normal except for use of modified gloves to compensate for grip.