List of 2003 Asian Costume Conventions
| Convention | Dates | Location |
|---|---|---|
| Cosplay Festival 2003 | January 25-26, 2003 | Korakuen Amusement Park Tokyo, Japan |
| Cosfest 2003 | February 15, 2003 | Cafe at-sunrice, Fort Canning Park Fort Canning Centre, Singapore |
| Cosplay Festival 2003 | March 29-30, 2003 | Korakuen Amusement Park Tokyo, Japan |
| CosMas! Con 2003 | June 14, 2003 | Sungai Wang Rooftop, 6th Floor Kuala Lumpur, Malaysia |
| World Cosplay Summit 2003 | October 12, 2003 | Osu Nagoya, Aichi, Japan |
| Convention | Dates | Location |