Glenn Dennis (March 24, 1925 – April 28, 2015) was a founder of the International UFO Museum and Research Center in Roswell, New Mexico.

In 1940, at age 15, Dennis began working as a part-time assistant at the Ballard Funeral Home, while attending Roswell High School.

After graduating high school, Dennis was excused from wartime military service due to poor hearing.

Dennis' account is repeated in Witness to Roswell: Unmasking the 60-Year Cover-Up by Thomas Carey and Donald Schmitt.

The authors then comment that "Dennis was found to have knowingly provided false information to investigators, and must technically stand impeached as a witness."