2003 in machinima
The following is a list of notable machinima-related events in the year 2003.

Notable releases
 April 1—Rooster Teeth Productions' Red vs. Blue began with the premiere of the . June 22—Fire Team Charlie Productions' Fire Team Charlie began with the premiere of the first episode. September 28— of Red vs. Blue ended with . Active series
 Fire Team Charlie (2003–2005)
 Red vs. Blue (2003–2007)
 Time Commanders (2003–2005)

Machinima
Machinima by year