Rob MacCachren (born March 24, 1965) is an American off-road racer from Las Vegas, Nevada.

MacCachren won his 200th event at Crandon International Off-Road Raceway at the 2012 World Championship Pro 2 race.

MacCachren, the son of an off-road racer, began racing dirt bikes in the terrain around Las Vegas, winning the 1973 Nevada State Motorcycle Championship as an eight-year-old.

[4] In 1989, MacCachren raced in HDRA/SCORE, winning both the Class 7S division for light pickup trucks and the mini metal championship.

[5] MacCachren won HDRA/SCORE's 7S and mini metal classes again in 1991 and was nominated for their Driver of the Year award.

[5] He competed in the final season of the Mickey Thompson Entertainment Group (MTEG) Grand National Sport Trucks Series in 1994.

At SODA's nationally televised events, he took the Governor's Cup at Crandon en route to winning the Class 4 season championship for 4-wheel-drive Trophy Trucks.

[7][8] With Venable, he also competed at Tucson Raceway Park in the Winston West Series, finishing 14th.

[9] In 2000, MacCachren won the first of three consecutive Governor's BorgWarner World Championship Shootout races.

[5] In 2003, MacCachren and fellow Mexican driver Gus Vildósola took the overall win on board of the #4 Vildosola Racing Trophy Truck during the 2003 San Felipe 250.

[13] With the win, MacCachren and Post became the first trophy truck drivers to take SCORE's overall season points championship.

[2] After decades of winning in the desert, MasterCraft Racing offered MacCachren the opportunity to pilot his own Jimco Trophy Truck as driver of record for the entire SCORE International series.

[16] At the 2011 San Felipe 250, MacCachren took the Trophy Truck class win and overall victory with a margin of 44 seconds[11] and a total time of 4:17.45 (58.7MPH).

[17] MacCachren was also successful in the competing TORC Pro 2WD series where he finished second for the season.

In 2012, MacCachren won the $20,000 Chairman's Cup at Crandon behind the wheel of the MOPAR RAM Pro 2WD.

2017 saw him win another SCORE San Felipe 250 and his first Best in the Desert Mint 400 in his hometown of Las Vegas.