Wikipedia:Selected anniversaries/January 23
- 1579 - The Union of Utrecht was signed, unifying the provinces in northern Netherlands.
- 1719 - Holy Roman Emperor Charles VI created Liechtenstein, the only principality in the Holy Roman Empire still remaining today.
- 1960 - The bathyscaphe Trieste reached the record depth of 10,916 m (35,813 feet) in Challenger Deep of the Mariana Trench.
- 1968 - USS Pueblo was seized by North Korean forces, who claimed that it had violated their territorial waters while spying.
- 1986 - Chuck Berry, James Brown, Ray Charles, Fats Domino, the Everly Brothers, Buddy Holly, Jerry Lee Lewis and Elvis Presley became the first inductees into the Rock and Roll Hall of Fame.
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