Sixteen athletes represented the United States in Australia at the 2024 UCI Masters Mountain Bike World Championships.
The Team USA roster is as follows:
Cross Country
| Name | Hometown | Age Group | Place |
| HENDERSHOT Ashley | Ashland, OH | F35-39 | 2 |
| WEIMAR Ashlee | Mead, WA | F40-44 | 4 |
| BRADFORD-PARISH Kevin | Mead, WA | M40-44 | 3 |
| NEEDHAM Shawn | Moses Lake, WA | M50-54 | 9 |
| JUAREZ David | Whittier, CA | M60-64 | 1 |
| CERVANTES Emilio | Lake Forest, CA | M60-64 | 3 |
| HAYLES Thomas | Aspen, CO | M65-69 | 5 |
| SEDERBERG Rick | Batesville, AR | M75-79 | 2 |
Downhill
| Name | Hometown | Age Group | Place |
| HARRIS Lindsey | Campbell hall, NY | F45-49 | 2 |
| MOSER Lauren | Henderson, NV | F35-39 | 1 |
| MELTON Dave | Mammoth lakes, CA | M65-69 | 2 |
| MCCORMACK Lee | Broomfield, CO | M55-59 | 9 |
| WINTER Quinn | Henderson, NV | M50-54 | 15 |
| HANAK Petr | Winter Park, CO | M45-49 | 1 |
| BARKER Jeff | Henderson, NV | M45-49 | 17 |
| COOKE Allan | Santa Cruz, CA | M40-44 | 3 |
