The American Crossword Puzzle Tournament is a crossword-solving tournament held annually in February, March, or April. Founded in 1978 by Will Shortz, who still directs the tournament, it is the oldest and largest crossword tournament held in the United States; the 2023 event set an attendance record with more than 750 competitors.

William F. Shortz is an American puzzle creator and editor who is the crossword editor for The New York Times. He graduated from Indiana University with a degree in the invented field of enigmatology. After starting his career at Penny Press and Games magazine, he was hired by The New York Times in 1993. Shortz's American Crossword Puzzle Tournament is the country's oldest and largest crossword tournament.