2003 is the 8th year since Active Worlds came into existence (at first AlphaWorld prior to 1996). May also be known in some cases as year 8 in Active Worlds.
- March 24
- SW City's 4th Birthday bash kicks off and lasts until March 29. These things happened:
- Residential contest in Cypris Creek.
- Industrial contest on Hyokia Island, Palm Grove.
- Wacky Races
- Games Night
- The Amazing SW Race (a spinoff of the CBS TV show "The Amazing Race").
- August 8
- August 29
- A new suburb in SW City is created by Ferruccio named Castle Pines, making it the fourth citizen-built area to become a suburb of SW City. Castle Pines becomes part of the Estate District.