John Francois De Mave (December 8, 1933 – January 16, 2025) was an American stage and television actor.

He was perhaps best known for playing Forest Ranger Bob Erickson in the American children's adventure television series Lassie from 1968 to 1970.

[3] He guest-starred in television programs including F Troop, Marcus Welby, M.D., The Fugitive, The Mary Tyler Moore Show, Daniel Boone, Adam-12 and Wagon Train, and The Doris Day Show.

[4] In 1968, he joined the cast of CBS's television series Lassie, playing the role of Forest Ranger Bob Erickson[5][6][7] until 1970.

[2] De Mave died in hospice care following a heart attack in Macon, Georgia, on January 16, 2025, at the age of 91.