United States Junior records in athletics are the best marks set in an event by an athlete who holds American citizenship and who has not yet reached their 20th birthday in the given year of competition.
As of August 2018 these records are not exclusive to athletes who compete for the United States in international competition.
Official records are kept and ratified by United States Track and Field.
[1] Key: Awaiting ratification Record not kept by USATF Not ratified or later rescinded by USATF