Francis Gregory Alan "Greg" Morris (September 27, 1933 – August 27, 1996) was an American television and movie actor.
Born in Cleveland, Ohio, Morris began his acting career in the 1960s making guest appearances on many TV shows such as The Twilight Zone and Ben Casey. In 1966, he was cast in his most recognizable role as the electronics expert Barney Collier in the TV series Mission: Impossible. Morris, Peter Lupus and Bob Johnson were the only actors to remain with the series throughout its entire run.
While in college, Morris was active in theater and hosted the late afternoon Jazz radio show, "Tea-Time," on the University of Iowa's station, WSUI. He co-produced concerts at the University with a student friend. After Iowa, Greg's first professional stage role was in The Death of Bessie Smith. One of his earliest television roles was a cameo appearance on The Dick Van Dyke Show, when Rob and Laura think they've gotten the wrong baby from the hospital. His appearance in that episode caused what is purported to be the longest, uninterrupted span of laughter from a live studio audience in TV history. In the 1963–1964 season, he appeared on ABC's drama about college life, Channing, starring Jason Evers and Henry Jones.