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B.J. Penn

BJ・ペン / BJ・ぺん

American mixed martial arts fighter

December 13, 1978 (age 47) ・ Kailua, Hawaii, United States

  • Hawaii
  • mixed martial arts fighter
  • writer
  • Brazilian jiu-jitsu practitioner

My Take

B.J. Penn is one of those fighters who made you feel like anything was possible in the early UFC days. Growing up in Kailua, Hawaii, he didn't exactly have the typical combat sports pedigree, yet he became the second fighter in UFC history to win titles in two different weight classes — Lightweight and Welterweight — which still sounds absurd when you say it out loud. His Brazilian jiu-jitsu was genuinely elite, a 5th-degree black belt who could end a fight on the ground in ways that looked almost casual. I always loved the contradiction of him: this laid-back island kid who turned absolutely savage the moment the cage door closed. His wars with guys like Frankie Edgar and Georges St-Pierre are the kind of fights that defined an era, and even in defeat he was compelling to watch. Not just a fighter — a personality the sport actually needed.

Overview

Jay Dee "B.J." Penn III (born December 13, 1978) is an American former professional mixed martial artist and 5th degree black belt Brazilian jiu-jitsu (BJJ) practitioner. A former UFC Lightweight Champion and UFC Welterweight Champion, he is the second of eleven fighters in UFC history to win titles in multiple weight classes.

1. Profile

Name (English)
B.J. Penn
Name (Japanese)
BJ・ペン
Reading
BJ・ぺん
Born
December 13, 1978 (age 47)
Zodiac / Chinese zodiac
Sagittarius / Horse
Origin
Kailua, Hawaii, United States
Blood type
Private
Height
175 cm
Agency
Private
Occupation
mixed martial arts fighter / writer / Brazilian jiu-jitsu practitioner

2. Background

Elementary school
Private
Junior high
Private
High school
Peru High School
University
Private

3. Relationships

Spouse
Private
Children
Private
Parents
Private
Siblings
Private

4. Personality

Motto

Private

7. About this entry

Tags

  • Hawaii
  • mixed martial arts fighter
  • writer
  • Brazilian jiu-jitsu practitioner
Last updated
2026-06-02

Facts are limited to publicly available information up to 2024; non-public items are marked "Private / Unknown". English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.