Henry Hook (September 18, 1955 – October 27, 2015) was an American creator of crossword puzzles, widely credited with popularizing the cryptic crossword in North America.

With Henry Rathvon and Emily Cox, he wrote the crossword for the Boston Globe.

Maleska's crossword contained the hidden message: You Have Just Finished The World's Most Remarkable CrosswordHook's crossword contained the hidden message: What Makes You Think Your Puzzle Is More Remarkable Than Mine[2]Maleska subsequently became Hook's mentor.

In the mid-1980s, he collaborated with novelists Patricia Moyes and Herbert Resnicow to create crosswords for crossword-themed mystery novels.

"[8] Crossword editor and historian Ben Tausig, in his 2013 The Curious History of the Crossword, described Hook as "an under-recognized, polarizing genius with a sometimes tense relationship with audiences.