The U.S. Girls' Junior is one of the fifteen U.S. national golf championships organized by the United States Golf Association. It is open to amateur girls who are under 19 on the last day of the competition and have a USGA handicap index of 9.4 or less. It consists of two days of stroke play, with the leading 64 competitors then playing a match play competition to decide the champion.
The inaugural championship was held in 1949 and was won by Marlene Bauer from a field of 28 entries.
Aree Wongluekiet, now Aree Song, is the youngest winner at 13 years, 99 days in 1999. Hollis Stacy is the only three-time winner of the tournament.
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