John J. O'Sullivan
Agency patch
Police Officer

John J. O'Sullivan

Kansas City Police Department — Kansas City, MO
Felonious
End of Watch December 12, 1978
Gender Male

Incident

Officer O'Sullivan was shot and killed when he was ambushed by a suspect he had previously arrested. Officer O'Sullivan was sitting in his patrol car when the suspect approached him and began talking with him. After a short conversation the suspect pulled out a handgun and shot him in the chest. The suspect was convicted but has since been released from prison.

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Added to badge.nw
August 2, 2026
Last updated
August 2, 2026

Honored here by 1 tribute.

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Tributes

I never knew you. I am standing here anyway.
Police Officer O'Sullivan served with the Kansas City Police Department.
Thank you for your service to the Kansas City community. Gone but never to be forgotten.
Rest easy, Police Officer O'Sullivan.

— S. Vincent Anthony, U.S. Army 1985-1993

Agency

Type Police Department
Location Kansas City, Cass County, MO
Platform Identity kcpd.jackson.mo.us.gov.nw

Service Record

End of Watch December 12, 1978
Gender Male

Incident Details

Cause Felonious
Weapon Handgun

The Sacrifice · Felonious

John is one of 15,742 officers killed feloniously in the United States, 57.1% of the 27,551 remembered there.

34,102 officers are remembered on this memorial. Each number below is one of them.

  1. See the roll
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Compare against
I

Time

In 1978, 121 officers in the United States were killed feloniously, the 43rd heaviest of 213 years on record. The heaviest was 1921, with 248.

Every year on record · United States
II

When

December holds 9.4% of these deaths in the United States, more than any other month. Tuesdays: 13.4%.

By month
By day of the week
III

How

Felonious deaths account for 57.1% of all 27,551 deaths in the United States, the most common cause. The weapon recorded was handgun, in 23.4% of these deaths.

Every cause
Weapons recorded
IV

His people

Kansas City Police Department has at least 120 officers remembered here, John among them.

Across the years

Police Officer John J. O'Sullivan

Kansas City Police Department · End of Watch December 12, 1978

Where the Name Is Cut

National Law Enforcement Officers Memorial · Panel 24-W

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