USS DeLong (DD-129) was a Wickes-class destroyer built for the United States Navy during World War I.

The turbines were designed to produce a total of 27,000 shaft horsepower (20,000 kW) intended to reach a speed of 35 knots (65 km/h; 40 mph).

The ships carried 225 long tons (229 t) of fuel oil which was intended gave them a range of 2,500 nautical miles (4,600 km; 2,900 mi) at 20 knots (37 km/h; 23 mph).

DeLong sailed from New York 3 November 1919, and after joining in exercises at Guantanamo Bay, and patrolling off Honduras arrived at San Diego 24 December.

After extended overhaul at Mare Island Navy Yard, she returned to San Diego 26 June 1921 and began operating from that port 21 October with 50 percent of her complement.