The Whitehead Mark 3 torpedo was a Whitehead torpedo adopted by the United States Navy for use in an anti-surface ship role after the E. W. Bliss Company of Brooklyn, New York secured manufacturing rights in 1892.

[2] The primary difference between the Mark 3 and the previous versions of the 3.55-meter Whiteheads was the inclusion of the Obry steering gyro for azimuth control.

This device reduced the maximum deviation right or left of the target from 24 to 8 yards.

[4] About 100 Mark 3s were purchased from the E. W. Bliss Company; in 1913, these were redesignated Torpedo Type A.

[1] The Mark 3 was ordinarily assembled into three sections: the warhead, the air flask and the after-body.