He was 85.
Doohan, who was diagnosed with Alzheimer’s disease last summer, died of complications from that degenerative illness and pneumonia, Steve Stevens told Reuters.
A native of Vancouver, British Columbia, Doohan was a prolific voice actor on Canadian radio before making his move into television in the 1950s.
But he will be remembered for playing Lt. Commander Montgomery “Scotty” Scott, the can-do chief engineer aboard the starship USS Enterprise on the original Star Trek series, which ran from 1966-69 on NBC.
He reprised the role for several big-screen Star Trek features.
One of his character’s chief functions on the show was to operate the transporter used to ‘beam’ crew members to and from the Enterprise — often in response to an order that entered the pop culture as the catch phrase “Beam me up Scotty.”