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List of 2004 Massachusetts Conventions
| Convention | Dates | Location |
|---|---|---|
| Arisia 2004 | January 16-18, 2004 | Boston Park Plaza Hotel & Towers Boston, MA |
| Boskone 2004 | February 13-15, 2004 | Sheraton Boston Hotel Boston, MA |
| Conbust 2004 | April 2-4, 2004 | Smith College (Seelye Hall) Northampton, MA |
| Anime Boston 2004 | April 9-11, 2004 | Boston Park Plaza Hotel & Towers Boston, MA |
| Noreascon 4 / Worldcon 2004 | September 2-6, 2004 | Hynes Convention Center Boston, MA |
| Anime Festival 2004 | November 13, 2004 | Academy of Music Theater Northampton, MA |
| Cosplay Human Chess 2004 | November 20, 2004 | Harvard University, Pforzheimer House Cambridge, MA |
| Boston Super MegaFest 2004 | November 20-21, 2004 | Sheraton Framingham Hotel & Conference Center Framingham, MA |
| First Night Boston 2005 | December 31, 2004 | Hynes Convention Center Boston, MA |
| Convention | Dates | Location |