FIM Motocross World Championship
MXGP Riders: I
- Monster Energy AMA Supercross Championship
- AMA Pro Motocross Championship
- SuperMotocross World Championship
- FIM Motocross World Championship
- Progressive GNCC Racing
- Motocross of Nations
- FIM World Supercross Championship
- Australian Supercross Championship
- Women's Motocross Championship
- Monster Energy Cup
Manuel Iacopi
Italy
Franco Iavecchia
Uruguay
Ahmet Idrisoglu
Türkiye
Ilya Ilyukhin
Russia
Lucas Imbert
France
Bastien Inghilleri
France
Adele Innocenzi
Italy
Kim Irmgartz
Germany
Muhammad Hakimi Iroly
Malaysia
Jernej Irt
Slovenia
Peter Irt
Slovenia
Graeme Irwin
Ireland
Diva Ismayana
Indonesia
Michael Ivanov
Bulgaria
Maykal Grisha Ivanov
Bulgaria