Standout achievements
Hayato Ishii is a Japanese mixed martial artist with a professional record of 18-8-4 across 30 bouts. They've won 3 by KO/TKO, 7 by submission and 8 by decision — a 56 % finish rate. Most wins come by decision. Last competed September 2025 (active). Has fought most often in Japan (30 bouts).
Fight locations (14 venues)
Career timeline — fights by year
Frequently asked
What is Hayato Ishii's MMA record?
Hayato Ishii has a professional MMA record of 18-8-4 — 3 wins by KO/TKO, 7 by submission, 8 by decision.
How does Hayato Ishii usually win?
They most often win by decision (8 of 18 wins).
How does Hayato Ishii usually lose?
Most of Hayato Ishii's losses come by KO/TKO (4 of 8).
Is Hayato Ishii still active?
Hayato Ishii last competed in September 2025, and is considered active (no bout in over two years).
What is Hayato Ishii's fastest finish?
submission of Takahiro Furumaki in 1:51 (Rd 1) at ONE Japan Series - Road to Century.
Where is Hayato Ishii from?
Hayato Ishii is a Japanese mixed martial artist.
What is Hayato Ishii's longest MMA win streak?
Hayato Ishii's longest winning run on record is 7 straight victories.
Where does Hayato Ishii rank in MMA?
Hayato Ishii sits at #6,178 of 32,631 fighters in the Fight Forensics global MMA rankings.
Pro MMA (30)
Amateur (4)
Amateur bouts — not counted toward the pro record.