HK
Super featherweight · Japan
Hiroshi Kobayashi 61-17-4 10 KO · 1962–2000
Hiroshi Kobayashi is a super featherweight boxer from Japan, born Aug 23, 1944. Record 61-17-4 with 10 knockouts over 1962–2000. World titles: WBA super featherweight (1967–1971), WBC super featherweight (1967–1969). Hiroshi Kobayashi last fought Trash Nakanuma on Sep 1, 2000 and lost by DEC over 6 rounds.
Also: Кобаясі Хіросі · Хироси Кобаяси · هيروشي كوباياشي +3 more هیروشی کوبایاشی · 小林弘 · Кобаяси, Хироси
Born Aug 23, 1944
Country 🇯🇵 Japan
Stance Orthodox
Height 168 cm
Debut Jul 2, 1962
Career 1962–2000
Rounds boxed 711
KO share 16%
Born in Isesaki, Japan
Titles WBA super featherweight 1967
Boxerbook rating 1363 ± 235 · inactive since Sep 2000Why here › Confirmed bouts 6 of 82
Record and next fight Record
61-17-4, 10 KOs · 1962–2000
Next fight
No next fight confirmed
Last result
The record 82 bouts, 1962–2000, newest first. Records under each bout are both boxers going in.
Bouts by source: English Wikipedia · 81, Wikipedia (ja) · 79, Wikipedia (ru) · 1
L
DEC 6/6
Kobayashi 61-16-4 · Nakanuma 15-2-0
L
PTS 10/10 · Japan
Kobayashi 61-15-4 · Kobayashi 16-4-2
L
PTS 8/8 · Prefectural Gymnasium, Nagoya, 🇯🇵
Kobayashi 61-14-4 · Todaka 10-2-0
L
KO 9/10 · Korakuen Hall, Korakuen Hall, 🇯🇵
Kobayashi 61-13-4 · Arbachakov 17-0-0
L
UD 10/10 · Manila Midtown Ramada Hotel - Malate, Manila, 🇵🇭
Kobayashi 61-12-4 · Bohol 30-13-3
L
UD 10/10 · Morioka, Iwate, 🇯🇵
Kobayashi 61-11-4 · Pascua 35-8-0
L
KO 4/10 · Munhwa Gymnasium, Seoul, 🇰🇷
Kobayashi 61-10-4 · Lee 14-4-0
L
KO 7/10 · Gimnasio Nuevo, Panama City, 🇵🇦
Kobayashi 61-9-4 · Durán 25-0-0
L
Lost WBA & The Ring super-featherweight titles TKO 10/15 · Prefectural Gymnasium, Aomori City, 🇯🇵
Kobayashi 61-8-4 · Morillo —
W
For WBA & The Ring super featherweight titles UD 15/15 · Nihon University Auditorium, Tokyo, 🇯🇵
Kobayashi 60-8-4 · Arredondo 55-4-0
W
SD 10/10 · Nihon University Auditorium, Tokyo, 🇯🇵
Kobayashi 59-8-4 · Saijo 27-5-2
W
Retained WBA & The Ring super-featherweight titles UD 15/15 · Korakuen Hall, Tokyo, 🇯🇵
Kobayashi 58-8-4 · Amaya —
W
Ray Adigun
UD 10/10 · Korakuen Hall, Tokyo, 🇯🇵
Kobayashi 57-8-4 · Adigun —
D
Hiroshi Shoji
SD 10/10 · Tokushima City, 🇯🇵
Kobayashi 57-8-3 · Shoji —
W
Retained WBA & The Ring super-featherweight titles UD 15/15 · Nihon University Auditorium, Tokyo, 🇯🇵
Kobayashi 56-8-3 · Cañete —
W
KO 2/10 · Japan
Kobayashi 55-8-3 · Ramos —
W
Retained WBA & The Ring super-featherweight titles SD 15/15 · Kokugikan, Tokyo, 🇯🇵
Kobayashi 54-8-3 · Amaya —
W
UD 10/10 · Korakuen Hall, Tokyo, 🇯🇵
Kobayashi 53-8-3 · George —
W
Jaime Valladares
Retained WBA, WBC, & The Ring super-featherweight titles UD 15/15 · Nippon Budokan, Tokyo, 🇯🇵
Kobayashi 52-8-3 · Valladares —
L
Rubén Navarro
MD 10/10 · Korakuen Hall, Tokyo, 🇯🇵
Kobayashi 52-7-3 · Navarro —
Show all 82 bouts W
Ulises Botero
KO 6/10 · Japan
Kobayashi 51-7-3 · Botero —
L
UD 10/10 · Olympic Auditorium, Los Angeles, 🇺🇸
Kobayashi 51-6-3 · Ramos 21-2-0
D
For WBA, WBC, & The Ring super-featherweight titles MD 15/15 · Nippon Budokan, Tokyo, 🇯🇵
Kobayashi 51-6-2 · Barrientos 24-4-1
W
Won WBA, WBC, & The Ring super-featherweight titles KO 12/15 · Kokugikan, Tokyo, 🇯🇵
Kobayashi 50-6-2 · Numata 33-4-0
W
Ki Jin Song
KO 8/10 · Japan
Kobayashi 49-6-2 · Song —
W
Chang Soo Yun
KO 7/10 · Japan
Kobayashi 48-6-2 · Yun —
W
Dony Tesorio
UD 10/10 · Japan
Kobayashi 47-6-2 · Tesorio —
W
Takao Mitsuhashi
Retained Japanese featherweight title UD 10/10 · Japan
Kobayashi 46-6-2 · Mitsuhashi —
W
Vicente Milan Derado
UD 10/10 · Korakuen Hall, Tokyo, 🇯🇵
Kobayashi 45-6-2 · Derado —
W
Kang Il Suh
UD 10/10 · Korakuen Hall, Tokyo, 🇯🇵
Kobayashi 44-6-2 · Suh —
W
Chun Kyo Shin
PTS 10/10 · Japan
Kobayashi 43-6-2 · Shin —
W
Del Kid Rosario
PTS 10/10 · Japan
Kobayashi 42-6-2 · Rosario —
W
Sumio Nobata
Retained Japanese featherweight title PTS 10/10 · Tokoname, 🇯🇵
Kobayashi 41-6-2 · Nobata —
W
Nobuo Chiba
Retained Japanese featherweight title PTS 10/10 · Japan
Kobayashi 40-6-2 · Chiba —
W
Bobby Valdez
RTD 7/10 · Olympic Auditorium, Los Angeles, 🇺🇸
Kobayashi 39-6-2 · Valdez —
W
Delfino Rosales
KO 9/10 · Culiacan, 🇲🇽
Kobayashi 38-6-2 · Rosales —
D
Aurelio Cazares
PTS 10/10 · Sinaloa de Leyva, 🇲🇽
Kobayashi 38-6-1 · Cazares —
L
Pedro Gómez
TKO 7/10 · Nuevo Circo, Caracas, 🇻🇪
Kobayashi 38-5-1 · Gómez —
L
Freddie Rengifo
PTS 10/10 · Nuevo Circo, Caracas, 🇻🇪
Kobayashi 38-4-1 · Rengifo —
D
Jaime Valladares
PTS 10/10 · Quito, 🇪🇨
Kobayashi 38-4-0 · Valladares —
W
Hiroshi Mori
PTS 10/10 · Japan
Kobayashi 37-4-0 · Mori —
W
Shigeo Shioyama
Retained Japanese featherweight title PTS 10/10 · Japan
Kobayashi 36-4-0 · Shioyama —
W
PTS 10/10 · Japan
Kobayashi 35-4-0 · Aoki —
W
Orlando Medina
PTS 10/10 · Japan
Kobayashi 34-4-0 · Medina —
W
Sugar Cane Carreon
PTS 10/10 · Japan
Kobayashi 33-4-0 · Carreon —
W
Hyun Kim
PTS 10/10 · Japan
Kobayashi 32-4-0 · Kim —
W
Atsushi Gunji
Retained Japanese featherweight title PTS 10/10 · Japan
Kobayashi 31-4-0 · Gunji —
W
Kunio Sakata
PTS 10/10 · Japan
Kobayashi 30-4-0 · Sakata —
W
Jong Tae Lim
PTS 10/10 · Ichinomiya, 🇯🇵
Kobayashi 29-4-0 · Lim —
W
Shigeo Shioyama
Retained Japanese featherweight title PTS 10/10 · Japan
Kobayashi 28-4-0 · Shioyama —
W
Soo Bok Kwon
KO 7/10 · Japan
Kobayashi 27-4-0 · Kwon —
W
Yuji Masuko
Retained Japanese featherweight title UD 10/10 · Japan
Kobayashi 26-4-0 · Masuko —
W
Hyun Kim
PTS 10/10 · Maebashi, 🇯🇵
Kobayashi 25-4-0 · Kim —
W
Atsushi Gunji
PTS 10/10 · Japan
Kobayashi 24-4-0 · Gunji —
W
Yuji Masuko
Won Japanese featherweight title PTS 10/10 · Japan
Kobayashi 23-4-0 · Masuko —
W
Dong Chun Lee
PTS 10/10 · Japan
Kobayashi 22-4-0 · Lee —
W
Kwang Joo Lee
PTS 10/10 · Japan
Kobayashi 21-4-0 · Lee —
W
PTS 10/10 · Japan
Kobayashi 20-4-0 · Seki —
W
Porte Villa
PTS 10/10 · Japan
Kobayashi 19-4-0 · Villa —
L
Eduardo Guerrero
PTS 10/10 · Japan
Kobayashi 19-3-0 · Guerrero —
L
Kang Il Suh
PTS 10/10 · Osaka, 🇯🇵
Kobayashi 19-2-0 · Suh —
L
Johnny Jamito
RTD 6/10 · Araneta Coliseum, Quezon City, 🇵🇭
Kobayashi 19-1-0 · Jamito —
L
For vacant Japanese featherweight title PTS 10/10 · Japan
Kobayashi 19-0-0 · Kikuchi —
W
Toshio Shibazaki
PTS 8/8 · Japan
Kobayashi 18-0-0 · Shibazaki —
W
Dommy Balajada
UD 10/10 · Japan
Kobayashi 17-0-0 · Balajada —
W
Yuji Masuko
KO 2/10 · Japan
Kobayashi 16-0-0 · Masuko —
W
Teruo Hino
PTS 8/8 · Japan
Kobayashi 15-0-0 · Hino —
W
Kazuhiro Furuya
MD 6/6 · Kokugikan, Tokyo, 🇯🇵
Kobayashi 14-0-0 · Furuya —
W
Hideo Fukuchi
UD 6/6 · Japan
Kobayashi 13-0-0 · Fukuchi —
W
Isamu Kato
UD 6/6 · Japan
Kobayashi 12-0-0 · Kato —
W
Tsutomu Yoshida
UD 6/6 · Japan
Kobayashi 11-0-0 · Yoshida —
W
Noriyoshi Toyoshima
UD 6/6 · Japan
Kobayashi 10-0-0 · Toyoshima —
W
Hisao Omori
UD 4/4 · Japan
Kobayashi 9-0-0 · Omori —
W
Saburo Yanagi
SD 4/4 · Japan
Kobayashi 8-0-0 · Yanagi —
W
Kazuo Hayasako
UD 4/4 · Korakuen Gym, Tokyo, 🇯🇵
Kobayashi 7-0-0 · Hayasako —
W
Masayoshi Otake
UD 4/4 · Japan
Kobayashi 6-0-0 · Otake —
W
Kazuyoshi Ohashi
UD 4/4 · Japan
Kobayashi 5-0-0 · Ohashi —
W
Kiyokazu Komura
UD 4/4 · Japan
Kobayashi 4-0-0 · Komura —
W
Saburo Yanagi
UD 4/4 · Japan
Kobayashi 3-0-0 · Yanagi —
W
Yukichi Takase
UD 4/4 · Japan
Kobayashi 2-0-0 · Takase —
W
Michio Ishii
TKO 2/4 · Japan
Kobayashi 1-0-0 · Ishii —
W
Hisatsugu Kyoya
MD 4/4 · Korakuen Gym, Tokyo, 🇯🇵
Kobayashi 0-0-0 · Kyoya —
Ratings now Not in any current ranking.
World titles
Facts
What is Hiroshi Kobayashi's record? Hiroshi Kobayashi's professional record is 61-17-4 with 10 knockouts.
When is Hiroshi Kobayashi's next fight? No next fight is confirmed as of 12 Oct 2026.
Who did Hiroshi Kobayashi fight last? Hiroshi Kobayashi last fought Trash Nakanuma on Sep 1, 2000 and lost by DEC over 6 rounds.
Which world titles has Hiroshi Kobayashi held? Hiroshi Kobayashi has held 2 world title reigns: WBA super featherweight (1967–1971), WBC super featherweight (1967–1969). Sources Boxerbook ID 9924 · permanent link boxerbook.com/id/9924 . Wikidata (CC0), English Wikipedia (CC BY-SA). Last fetched: 2026-10-12. Spot a mistake? Every bout page has a link to report it.