
John A. Alonzo (June 12, 1934 - March 13, 2001) was an American cinematographer and actor, known for Chinatown (1974), The Magnificent Seven (1960) and Star Trek: Generations (1994). He was previously married to Suzanne L. Heltzel and Jan Murray.

The Magnificent Seven
1960 · as Miguel

The Gun Runners
1958 · as Soldier in Car (uncredited)

Invitation to a Gunfighter
1964 · as Manuel

The Crowded Sky
1960 · as Young Repairman

Visions of Light
1992 · as Self

Susan Slade
1961 · as Engineer

Hand of Death
1962 · as Carlos, lab assistant

The Long Rope
1961 · as Manuel Alvarez (as John Alonzo)

The Man Who Shot Chinatown: The Life and Work of John A. Alonzo
2007 · as Self (archive footage)

Nightmare in Chicago
1964 · as Officer Miller

Guns for Hire: The Making of 'The Magnificent Seven'
2000 · as Self

The Making of 'Scarface'
1998 · as Self

Terror At Black Falls
1962 · as Carlos Avila (as John Alonzo)