David McMahon

Birdman of Alcatraz
Inmate
Film, 1962

Patty
Father O'Brien
Film, 1962

Let No Man Write My Epitaph
Barney the Bartender
Film, 1960

The FBI Story
Klansman
Film, 1959

Cowboy (Glenn Ford)
Cattle Buyer
Film, 1958

Femmina e mitra
Frank - Missouri Deputy
Film, 1958

La mantide omicida
Capt. Frank Carver
Film, 1957

The Monster That Challenged the World
Patterson
Film, 1957

Off limits
MSgt. Pringle
Film, 1957

Bus Stop
Ticket Taker at Bus
Film, 1956

The Creature Walks Among Us
Capt. Stanley
Film, 1956

Caccia al tesoro con Gianni e Pinotto
Savoldi
Film, 1956

It Conquered the World
Gen. Carpenter
Film, 1956

Rebel Without a Cause
Crunch's Father
Film, 1955

I Died a Thousand Times
Auto Court Owner
Film, 1955

La guerra dei mondi
Minister, First Church
Film, 1953

Don't Bother to Knock
Uniformed Cop at End
Film, 1952

Glory Alley
Frank, the Policeman
Film, 1952

O. Henry's Full House
Cop (segment "The Clarion Call")
Film, 1952

Off Limits
Shore Patrolman
Film, 1952

Bannerline
Film, 1951

Best of the Badmen
Ed Perk
Film, 1951

Cry Danger
Trailer Park Officer
Film, 1951

Darling, How Could You!
Lieutenant
Film, 1951

Inside the Walls of Folsom Prison
Film, 1951

Roadblock
Police Radio Operator
Film, 1951

The Thing from Another World
Gen. Fogarty
Film, 1951

Mystery Street
Detective Garrity
Film, 1950

When Willie Comes Marching Home
Col. Ainsley
Film, 1950

Sui marciapiedi
Harrington
Film, 1950

Adam's Rib
Reporter
Film, 1949

Ero uno sposo di guerra
Army Chaplain
Film, 1949

Something in the Wind
Nolan
Film, 1947