USS Marguerite (SP-193) was a United States Navy patrol vessel in commission from 1917 to 1919.

Marguerite in private use in 1916 or 1917, prior to her U.S. Navy service.
History
United States
Name	USS Marguerite
Namesake	Previous name retained
Builder	Smith-Williams Company, Salisbury, Maryland
Completed	1916
Acquired	27 June 1917
Commissioned	2 October 1917
Fate	Transferred to Department of the Treasury 11 December 1919 for use by U.S. Coast Guard
Notes	Built as civilian motorboat Marguerite
General characteristics
Type	Patrol vessel
Tonnage	33 tons
Length	60 ft (18 m)
Beam	13 ft (4.0 m)
Draft	3 ft 6 in (1.07 m)
Speed	12 knots
Complement	6
Armament	1 × 1-pounder gun 1 × machine gun

Marguerite was built as a civilian motorboat of the same name in 1916 by the Smith-Williams Company at Salisbury, Maryland. The U.S. Navy purchased her from her owner, W. D. Sargent of Bayonne, New Jersey, on 27 June 1917 for World War I service as a patrol vessel. She was commissioned as USS Marguerite (SP-193) on 2 October 1917.

Marguerite was assigned to the 7th Naval District and served as a section patrol boat based at St. Augustine, Florida.

Marguerite was transferred to the Department of the Treasury on 11 December 1919 for use by the United States Coast Guard.