K-1 · Bantamweight

Issei Ishii

石井一成

Former K-1 Champion

Issei Ishii (石井一成, Ishii Issei; born September 15, 1998) is a Japanese kickboxer and Muay Thai fighter. He is a former K-1 Bantamweight Champion and WBC Muay Thai world champion.

Profile

Nationality: Japan
Gym: Uowanchaipuromoshon
Weight class: Bantamweight
Record: 50-20-4
Last fight: 2026-07-20 ECO信頼サービス株式会社PRESENTS K-1 DONTAKU 2026
Promotions: K-1
Discipline: kickboxing

Social media

Instagramissei_ishii Xissei_0915 YouTube

Videos

Search YouTube for Issei Ishii

Teammates

DaawsyaamK-1

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Sources: Latest event results · Wikipedia