Rupert Leo Brown

Brown, circa 2020

  • Missing Since 12/31/2020
  • Missing From Fremont County, Wyoming
  • Classification Endangered Missing
  • Sex Male
  • Race Native American
  • Age 41 years old
  • Height and Weight 5'6, 140 pounds
  • Clothing/Jewelry Description A white pullover sweatshirt, jeans and black and white running shoes.
  • Distinguishing Characteristics Native American male. Black hair, brown eyes. Brown has a scar on his left cheek and a scar near his right eye. He is a member of the Northern Arapahoe tribe.

Details of Disappearance

Brown was last seen in the vicinity of Beaver Creek Housing in Riverton, Wyoming on December 31, 2020. He was dropped off near his sister's home and wanted a ride to his brother's home off 17 Mile Road, about a ten- to fifteen-minute drive away. His sister said she couldn't take him for an hour, as her husband had a medical appointment, and Brown agreed to wait. By the time she was ready to take him, though, he was gone, and left his winter coat behind.

A cousin reported having seen Brown in a downtown park the next day. She was driving by, saw him, and turned around to offer him a ride, but by the time she got back there just a few minutes later, he was gone. He has never been heard from again.

Brown may have traveled to the Northern Cheyenne Indian Reservation in Montana, where he has friends. At the time of his disappearance, he didn't have a cellular phone or a bank account and was staying with friends. His case remains unsolved.

Investigating Agency

  • Wind River Agency 307-332-7810

Updated 2 times since October 12, 2004. Last updated February 27, 2026; details of disappearance updated.