- January 6: Apple CEO Steve Jobs introduces the 1st-generation iPod mini at the keynote event of Macworld Expo in San Francisco.
- June 28-July 2: The 2004 Worldwide Developers Conference is held at Moscone Center West in San Francisco, California.
- August 28: Apple Shinsaibashi is opened in Japan.
- September 4-5: The first Worldwide Newton Conference is held in Paris, France.
- November 10: WikiMac, the oldest predecessor to the Apple Wiki, is established.