The men's road race H3 cycling event at the 2020 Summer Paralympics took place on 1 September 2021 at Fuji Speedway in Shizuoka Prefecture.

16 riders competed in the event.

[1] The H3 classification is paraplegics with impairments from T4 thru T10.

These riders will operate using a hand-operated cycle.

The event took place on 1 September 2021 at 14:20.