A list of notable events related to The Hardy Boys that happened in the 1920s.
- Simon & Schuster, the current publisher of The Hardy Boys, is founded by Richard L. Simon and M. Lincoln Schuster.
- Edward Stratemeyer conceives the idea of The Hardy Boys and writes the outlines for the first stories. Leslie McFarlane, who has worked for Stratemeyer in the past, is hired by to ghostwrite the books.
- May 16 - The first three volumes in The Hardy Boys series are released as a breeder set by Grosset & Dunlap. They are The Tower Treasure, The House on the Cliff, and The Secret of the Old Mill. This set is a test trilogy to see if an actual series about The Hardy Boys would be a commercial success.
1920s: 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929