The 2023 AMA Motocross Championship season was the 52nd AMA Motocross National Championship season, the premier motocross series in USA. Eli Tomac went into the season as the defending champion in the 450 class, after taking his fourth 450 national title in 2022. However, after an injury sustained during the 2023 AMA Supercross Championship Tomac did not defend his title. In the 250 class, Jett Lawrence went into the season as the defending champion, after winning his second 250 title the previous season. However, Lawrence moved up to the 450MX class, which meant he did not defend his title.

In his rookie season in the 450 class, Jett Lawrence recorded a perfect season by winning all 22 races. His older brother, Hunter Lawrence, took his first American motocross title in the 250 class.

The championship formed the second part of the inaugural SuperMotocross World Championship.

Calendar and Results

450cc

250cc

Track locations

450cc

Entry List

Riders Championship
{|
|

250cc

Entry List

Riders Championship
{|
|

References

AMA Motocross Championship
AMA National Motocross Championship
AMA Motocross
AMA Motocross