Merl Harry Reagle was an American crossword constructor. For 30 years, he constructed a puzzle every Sunday for the San Francisco Chronicle, which he syndicated to more than 50 Sunday newspapers, including the Washington Post, the Los Angeles Times, the Philadelphia Inquirer, the Seattle Times, The Plain Dealer, the Hartford Courant, the New York Observer, and the Arizona Daily Star. Reagle also produced crossword puzzles for AARP: The Magazine and the American Crossword Puzzle Tournament.

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.