A list of notable events related to The Hardy Boys that happened in the 1990s.
- Applewood Books publishes it's first facsimile series of the original text Hardy Boys, #1 The Tower Treasure, #2 The House on the Cliff, and #3 The Secret of the Old Mill.
- The last Hardy Boys and Tom Swift Ultra Thriller, #2 The Alien Factor is published.
- September 9 - A new Hardy Boys television series, staring Colin Gray as Frank Hardy and Paul Popowich as Joe, premieres in Canada with episode #1 All that Glitters.
- December 16 - No Dice, the 13th and last episode in the short-lived Hardy Boys television series, first airs. Series discontinued.
- Frank and Joe Hardy: The Clues Brothers begins, with the publication of the first book, The Gross Ghost Mystery.
- January - The Hardy Boys Casefiles series is discontinued, after the publication of #127 Dead in the Water.
- April - A Nancy Drew and Hardy Boys SuperMystery series is discontinued, with the publication of #36 Process of Elimination.
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