Football referees
Anton Ihring
Akihiko Ikeuchi
Alireza Ildorom
Arnar Ingi Ingvarsson
Arman Ismuratov
Ahmed Issa
Aleksey Ivannikov
Asa'ad Jabarin
Adrien Jaccottet
Aaron Jackson
Anaik Jacoby
A. Jacottet
Abdullah Jamali
Abdallah L. Jammeh
Anže Jerič
Ancizar Geremias Jiménez Domínguez
Alex Johnson
Aaron Wyn Jones
Anne-Marie Joseph
Aurélien Juenkou
Andrew Juma
Atte Jussila
Alhaji Musa Kabia
Anton Kachanov
Almir Kadiric
Atsushi Kamimura
Anojen Kanagasingam
Alim Kandemir
Antti Kanerva
Ashwin Mohanlal Kanojia
Abdoul Kanoso
Atilla Karaoğlan
Ali Karatutlu
Andrei Karhu
Abdulsalam Kassim
Artem Kataykin
Alexandros Katsikogiannis
Adnan Deniz Kayatepe
Anna-Marie Keighley
Alexandre Keita
Alan Kelly
Artis Ķēniņš
Aleksi Keronen
Adam Kersey
Abd Khaled
Ahmed Mohamed Khalil Saad
Abbas Khan
Artem Kharin
A. Kherradji
Andriy Kholyavko