Ilir Latifi
Ilir Latifi
12-9-0 (1 NC) · Heavyweight
Illya Kravchenko
Illya Kravchenko
0-1-0
IR
Imanol Rodriguez
8-0-0 (W-L-D) · Flyweight
Impa Kasanganay
Impa Kasanganay
2-2-0 · Welterweight
Ioan Vranceanu
Ioan Vranceanu
8-22-0 · Bantamweight
Ion Cutelaba
Ion Cutelaba
20-12-1 (W-L-D) · Light Heavyweight
Irene Aldana
Irene Aldana
15-8-0 (W-L-D) · Women's Bantamweight
Irina Alekseeva
Irina Alekseeva
5-4-0 · Women's Bantamweight
Irwin Rivera
Irwin Rivera
3-0-0 · Bantamweight
Isaac Dulgarian
Isaac Dulgarian
11-2-0 · Featherweight
Isaac Thomson
Isaac Thomson
11-3-0 · Featherweight
Isaac Vallie-Flagg
Isaac Vallie-Flagg
18-9-1 · Lightweight
ID
Isabela de Padua
0-1-0
Islam Dulatov
Islam Dulatov
12-1-0 (W-L-D) · Welterweight
Ismael Bonfim
Ismael Bonfim
20-8-0 (W-L-D) · Lightweight
Ismail Naurdiev
Ismail Naurdiev
26-8-0 (W-L-D) · Middleweight
Israel Palacios
Israel Palacios
0-1-0 · Middleweight
Issei Tamura
Issei Tamura
15-12-0 · Bantamweight
Istela Nunes
Istela Nunes
0-5-0 · Women's Strawweight
IM
Italo Melo
Italo Nascimento
Italo Nascimento
0-2-0 · Heavyweight
Iuri Alcantara
Iuri Alcantara
10-8-0 · Bantamweight
Ivan Erslan
Ivan Erslan
15-6-0 (W-L-D) · Light Heavyweight
Ivan Jorge
Ivan Jorge
27-8-0 · Lightweight
Ivan Menjivar
Ivan Menjivar
22-12-0 · Featherweight
Ivan Salaverry
Ivan Salaverry
15-9-0 · Middleweight
Ivan Serati
Ivan Serati
8-4-0 · Light Heavyweight
Ivan Tena
Ivan Tena
9-4-0 · Featherweight
Ivana Petrovic
Ivana Petrovic
7-3-0 (W-L-D) · Women's Flyweight
Ivor Petersen
Ivor Petersen
1-1-0 · Welterweight
Iwo Baraniewski
Iwo Baraniewski
9-1-0 (W-L-D) · Light Heavyweight
Izabela Badurek
Izabela Badurek
8-7-0 · Women's Strawweight
J.J. Madrid
J.J. Madrid
3-6-0 · Bantamweight
J.P. Buys
J.P. Buys
13-6-0 · Bantamweight
Jacare Souza
Jacare Souza
9-7-0 · Middleweight
Jack Hermansson
Jack Hermansson
25-10-0 · Welterweight
Jack Jenkins
Jack Jenkins
14-5-0 (W-L-D) · Featherweight
Jack Marshman
Jack Marshman
26-13-0 · Middleweight
Jack May
Jack May
22-11-0 (1 NC) · Heavyweight
Jack McGlaughlin
Jack McGlaughlin
1-0-0
JN
Jack Nilson
1-1-0
Jack Shore
Jack Shore
29-3-0 · Featherweight
Jackie Lee
Jackie Lee
1-0-0 · Lightweight
Jackson McVey
Jackson McVey
8-2-0 (W-L-D) · Middleweight
JK
Jacob Kilburn
0-2-0
Jacob Malkoun
Jacob Malkoun
10-3-0 (W-L-D) · Middleweight
Jacob Volkmann
Jacob Volkmann
18-7-0 · Lightweight
Jacobe Smith
Jacobe Smith
13-0-0 (W-L-D) · Welterweight
Jacqualine Trosee Feddersen
Jacqualine Trosee Feddersen
3-5-0 · Bantamweight
Jafel Filho
Jafel Filho
17-5-0 (W-L-D) · Bantamweight