Keith married three times, first to Frances Helm; then, in 1954, to actress Judy Landon (who made a guest appearance on Family Affair);[REF] and finally, in 1970, to Hawaiian actress Victoria Young (née Leialoha), who later appeared on The Brian Keith Show as Nurse Puni [REF].
Keith fathered two children with Landon (Michael and Mimi), and together they adopted three others (Barbra, Betty, and Rory).