The Yokkaichi Challenger is a professional tennis tournament played on hard courts. It is currently part of the ATP Challenger Tour. It is held annually in Yokkaichi, Japan since 2019.^[1]

Year	Champion[2]	Runner-up	Score
2024	Rei Sakamoto	Christoph Negritu	1–6, 6–3, 6–4
2023	Zizou Bergs	Michael Mmoh	6–2, 7–6(7–2)
2022	Yosuke Watanuki	Frederico Ferreira Silva	6–2, 6–2
2020–21	Not held
2019	Yūichi Sugita	James Duckworth	3–6, 6–3, 7–6(7–1)

Year	Champions	Runners-up	Score
2024	Thomas Fancutt Jakub Paul	Kokoro Isomura Hikaru Shiraishi	6–2, 7–5
2023	Evan King Reese Stalder	Ray Ho Calum Puttergill	7–5, 6–4
2022	Hsu Yu-hsiou Yuta Shimizu	Masamichi Imamura Rio Noguchi	7–6(7–2), 6–4
2020–21	Not held
2019	Nam Ji-sung Song Min-kyu	Gong Maoxin Zhang Ze	6–3, 3–6, [14–12]