William J. Duncan
Agency patch
Patrolman

William J. Duncan

Felonious
End of Watch May 17, 1930
Age 28
Tour of Duty 2 yrs
Badge 4326
The Vigil Panel 59 ›
Gender Male

Incident

Patrolman William Duncan was shot and killed while attempting to apprehend car thief who fled from the scene of a vehicle collision. Patrolman Duncan was on foot patrol near the corner of Ninth Avenue and Forty Eighth Street when he observed a vehicle collide with a parked car. Unknown to Patrolman Duncan, the driver had stolen the vehicle hours earlier. Upon observing the collision, Patrolman Duncan approached the scene. As he did, the driver exited from the vehicle and fled on foot. Patrolman Duncan pursued him, and fired two warning shots into the air. As Patrolman Duncan got closer to the suspect, the suspect turned and fired a .25 caliber pistol, striking Patrolman Duncan in the chest. Patrolman Duncan was able to return fire before falling to the ground, but his shots did not strike the suspect. Patrolman Duncan died at the scene. The suspect dropped his gun and continued to flee on foot, escaping capture. He was never identified. Patrolman Duncan served with the New York City Police Department for two years. He was assigned to the Midtown North Precinct.

In Our Keeping

Permanent identifier
BO-US-NY-AD0EB17F
Stewardship
Maintained by NeuraWeb Global Inc.
Added to badge.nw
August 2, 2026
Last updated
August 2, 2026

Honored here by 1 sentinel - 1 tribute.

Are you family? This record can be claimed and maintained by those who knew William. Claim this record.

This page is permanent and free. No fee to view it, no advertising, no tracking, and no account required. It will not be taken down.

Tributes

I never knew you. I am standing here anyway.
Patrolman Duncan gave the New York City Police Department 2 years.
Thank you for your service to the New York community. Gone but never to be forgotten.
Rest easy, Patrolman Duncan.

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

Agency

Type Police Department
Location New York, NY
Platform Identity nypd.newyork.ny.us.gov.nw

Service Record

End of Watch May 17, 1930
Tour of Duty 2 yrs
Age 28
Badge Number 4326
Gender Male

Incident Details

Cause Felonious
Weapon Handgun

Patrolman William J. Duncan is one of 17,559 officers killed feloniously — deliberately targeted and murdered in the line of duty across the full record of this memorial — 53.9% of all 32,587 officers honored here.

In NY, 728 of 2,147 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 33.9% of this state's fallen. That is 20 percentage points below the national rate of 53.9%.

At New York City Police Department, 365 of 1237 officers on record were killed feloniously — deliberately targeted and murdered in the line of duty — 29.5% of this agency's fallen.

New York City Police Department
365
of 1,237 officers
29.5% Felonious
NY — Statewide
728
of 2,147 officers
33.9% Felonious
Nationwide
17,559
of 32,587 officers
53.9% Felonious

National Cause Distribution

How Felonious compares to all causes of officer death in the memorial record. William J. Duncan's cause is highlighted.

Felonious
17,559 (53.9%)
Accident
10,095 (31%)
Illness
3,037 (9.3%)
Cardiac
1,306 (4%)
Undetermined
334 (1%)
Suicide
256 (0.8%)

How William J. Duncan Compares

Age at End of Watch
28
This officer
Avg for Felonious: 39.0 years
Years of Service
2
This officer
Avg for Felonious: 8.5 years

When Felonious Deaths Occur

Monthly distribution of Felonious deaths across the full memorial record. William J. Duncan is highlighted in May.

Jan
1,392
Feb
1,295
Mar
1,373
Apr
1,516
May
1,504
Jun
1,442
Jul
1,587
Aug
1,517
Sep
1,491
Oct
1,371
Nov
1,447
Dec
1,624

Weapons Used Against Officers

Most common weapons in felonious officer deaths. William J. Duncan was killed by handgun.

Handgun
3,684
Gun
3,592
Gun; Unknown type
1,492
Shotgun
1,109
Rifle
935
Officer's handgun
909

Incident Location