Indiana Conservation Officers say Philip Glasgo, 66, of Guilford was checking fencing around his cattle pasture when the accident occurred.
After Glasgo did not return home for an extended period of time, he was found by family members underneath the ATV and unconscious.
The accident is under investigation.
Agencies assisting at the scene were for the Dearborn County Sheriff’s Department, Lawrenceburg EMS and Miller/York Fire Department.
DNR Officials encourage the use of protective gear while operating off-road vehicles. Educational courses are available at the DNR website.