Being the host nation, Japan has been awarded a minimum of three boats, with one each in the men's C-1 1000 m, women's C-1 200 m, and women's K-1 500 m. The men's K-4 500 m boat was added to the team roster with a top-ten finish at the 2019 ICF Canoe Sprint World Championships in Szeged, Hungary and the women's K-1 200 m with the fastest finish vying for qualification at the 2021 Asian Championships in Pattaya, Thailand. With the cancellation of the 2021 Pan American Championships and the lack of eligible competitors available from the Americas in the canoe sprint regatta, the women's C-2 500 m crew accepted a spare berth from the International Canoe Federation for the Japanese team.