Robert Knapp

1960s

1. 1968
   

   Adam-12

   Sgt. Casey · 1 episode

   75
2. 1967
   

   The Invaders

   Congressman Joe Bonning, Lt. Col. Howell · 1 episode

   77
3. 1960

   The Threat

   Steve Keenan

1950s

1. 1959

   Gunmen from Laredo

   Gil Reardon

2. 

   Black Saddle

   Emory Parsons · 1 episode

3. 1958
   

   Behind Closed Doors

   Fred Lang · 1 episode

4. Hot Car Girl

   Det. Lt. Ryan

5. The Rawhide Trail

   Farley Durand

6. 1957

   Outlaw's Son

   Striker

7. 

   Revolt at Fort Laramie

   Lt. Chick Waller

   59
8. 

   Tomahawk Trail

   Pvt. Barrow

   57
9. 1956
   

   Scandal Incorporated

   Jess Blanchar, tabloid reporter

10. 

    Screaming Eagles

    Co-Pilot

11. 1954

    Silent Raiders

    Lt. Finch

12. 1953
    

    Mesa of Lost Women

    Grant Phillips

    26
13. 1952

    Strange Fascination

    Jack

14. 1951
    

    Fixed Bayonets!

    Chuck (uncredited)

    76