Jonathan Bion Provost (born March 12, 1950) is an American actor, best known for his role as young Timmy Martin in the CBS series Lassie.

He then appeared in Back from Eternity (1956) with Anita Ekberg and Escapade in Japan (1957), with Teresa Wright, Cameron Mitchell, and an unknown and uncredited Clint Eastwood.

The following year, he met June Lockhart on the set, who would play his mother, Ruth Martin, and would remain close friends.

[2] Provost continued working in television and films, including This Property is Condemned with Natalie Wood and Robert Redford and The Computer Wore Tennis Shoes with Kurt Russell.

Later, he sold real estate in Sonoma County, California and donated his time to various causes such as the Humane Society, Easter Seals, Canine Companions for Independence and local charities.