USS Jackdaw (AMS-21/YMS-373) was a YMS-1-class minesweeper of the YMS-135 subclass built for the United States Navy during World War II.

USS YMS-373 was constructed at the Weaver Shipyards, Orange, Texas.

She was laid down on 28 December 1942, launched on 29 January 1944, and commissioned as USS YMS-373 on 29 April 1944.

On 18 February 1947 YMS-373 was reclassified as a minesweeper, USS Jackdaw (AMS-21).

Jackdaw was transferred in 1960 to Brazil, which named her Jurvá.