Anime-Cons.com (reference site)
Tokyo Anime Center
See also: tek's links: events

Note: I'll try as best I can to keep information (dates & locations) up to date for at least a month in advance. Info on events listed beyond that may be from the previous year.

January

• Anime Los Angeles (Burbank, CA; Jan. 4-6, 2008)
• Ohayocon (Columbus, OH; Jan. 4-6, 2008)
• SacAnime (Sacramento, CA; Jan. 11-13, 2008)
• Genericon (Troy, NY; Jan. 25-27, 2007)
• Setsucon (State College, PA; Jan. 26-27, 2008)

• A&G Ohio (Akron, OH; Feb. 8-10, 2008)
• Ikkicon (Austin, TX; Feb. 8-10, 2008)
• Naka-Kon (Kansas City, KA; Feb. 8-10, 2008)
• Ushiko's Project (Austin, TX; Feb. 8-10, 2008)
• Katsucon (Washington, D.C.; Feb. 15-17, 2008)
• Senshi-Con (Anchorage, AK; Feb. 23, 2008)
• Kei-kon (Vancouver Island, BC, Canada; Feb. 23-25, 2007)
• American Anime Awards (Feb. 24, 2007)

• Daigacon (Bowling Green, KY; March 2-4)
• Nishikaze (Lethbridge, Alberta, Canada; March 8, 2008)
• Anime Oasis (Boise, ID; March 13-16, 2008)
• MomoCon (Atlanta, GA; March 15-16, 2008)
• Anime Boston (Boston, MA; March 21-23, 2008)
• Anime Matsuri (Houston, TX; March 21-23, 2008)
• Tokyo International Anime Fair (Tokyo, Japan; March 27-30, 2008)
• Japanese Anime & Manga Paradise Convention (Chatanooga, TN; March 28-30, 2008)
• Sakura-Con (Seattle, WA; March 28-30, 2008)
• Animania Festival (Sydney, Australia; March 29, 2008)
• Animarathon (Bowling Green, OH; March 29, 2008)

• Anime Detour (Bloomington, MN; April 4-6, 2008)
• Tales of Anime (San Mateo, CA; April 6-8, 2007)
• AniZona (Phoenix, AZ; April 9-12, 2009)
• Anime Punch! (Columbus, OH; April 11-13, 2008)
• Tekkoshocon (Pittsburgh, PA; April 11-13, 2008)
• Castle Point Anime Convention (Hoboken, NJ; April 13, 2008)
• Kawaii Kon (Honolulu, HI; April 18-20, 2008)
• No Brand Con (Eau Claire, WI; April 18-20, 2008)
• Animania Festival (Melbourne, Australia; April 19, 2008)
• Middle Tennessee Anime Convention (Nashville, TN; April 25-27, 2008)

• Animania Festival (Brisbane, Australia; May 10, 2008)
• Anime Central (Rosemont, IL; May 16-18, 2008)
• JACON (Orlando, FL; May 16-18, 2008)
• Otafest (Calgary, Alberta, Canada; May 16-18, 2008)
• Animazement (Durham, NC; May 23-25, 2008)
• Anime North (Toronto, Ontario, Canada; May 23-25, 2008)
• FanimeCon (San Jose, CA; May 23-26, 2008)
• A-Kon (Dallas, TX; May 30-June 1, 2008)

• OMG!!con (Paducah, KY; June 6-8, 2008)
• OtakuOmaha (Omaha, NE; June 6-8, 2008)
• Anime Mid-Atlantic (Virginia Beach, VA; June 13-15, 2008)
• AnimeNEXT (Secaucus, NJ; June 20-22, 2008)
• The Japanese Animation, Film, and Art Expo (Allendale, MI; June 21-22, 2008)
• ColossalCon (Cleveland, OH; June 26-29, 2008)
• PersaCon (Huntsville, AL; June 27-29, 2008)
• Northern Anime Festival (Oshawa, ON, Canada; June 28-29, 2008)

• Anime Expo (Los Angeles, CA; July 3-6, 2008)
• PortConMaine (Portland, ME; July 3-6, 2008)
• Ikasucon (Fort Wayne, IN; July 18-20, 2008)
• METROCON (Tampa, FL; July 18-20, 2008)
• Ai-Kon (Winnipeg, MB, Canada; July 25-27, 2008)
• Tokonatsu Camping Anime & Manga Festival (Woburn, England; July 25-28, 2008)

• ConnectiCon (Hartford, CT; Aug. 1-3, 2008)
• MechaCon (Lafayette, LA; Aug. 1-3, 2008)
• Yasumicon (Miami, FL; Aug. 1-3, 2008)
• Ani-Jam (Fresno, CA; Aug. 2-3, 2008)
• Animethon (Edmonton, AB, Canada; Aug. 8-10, 2008)
• Otakon (Baltimore, MD; Aug. 8-10, 2008)
• Anime Festival Orlando (Orlando, FL; Aug. 15-17, 2008)
• Anime Festival Wichita (Wichita, KA; Aug. 15-17, 2008)
• AnimeIowa (Coralville, IA; Aug. 15-17, 2008)
• Comiket (Tokyo, Japan; Aug. 15-17, 2008)
• Anime Evolution (Burnaby, BC, Canada; Aug. 22-24, 2008)
• Matsuricon (Dublin, OH; Aug. 22-24, 2008)
• Animania Festival (Sydney, Australia; Aug. 23-24, 2008)
• AnimeFest (Dallas, TX; Aug. 29-Sept. 1, 2008)
• Anime Vegas (Las Vegas, NV; Aug. 30-Sept. 1, 2008)
• Kumoricon (Portland, OR; Aug. 30-Sept. 1, 2008)
• AtsuiCon (Houston, TX; 2009)

• RealmsCon (Corpus Christi, TX; Sept. 5-7, 2008)
• Nan Desu Kan (Denver, CO; Sept. 12-14, 2008)
• Anime Weekend Atlanta (Atlanta, GA; Sept. 19-21, 2008)
• MikomiCon (Northridge, CA; Sept. 19-21, 2008)
• Animania Festival (Brisbane, Australia, Sept. 20, 2008)
• Sogen Con (Sioux Falls, SD; Sept. 26-28, 2008)
• Tsubasacon (Huntington, WV; Sept. 26-28, 2008)
• Yaoi-Con (San Francisco, CA; Sept. 26-28, 2008)
• Chibi-Pa (West Palm Beach, FL, Sept. 27-28, 2008)

• MangaNEXT (Secaucus, NJ; Oct. 5-7, 2007)
• Providence Anime Conference (Providence, RI; Oct. 3-5, 2008)
• SITACon (Utica, NY; Oct. 10-12, 2008)
• Another Anime Convention (Nashua, NH; Oct. 17-19, 2008)
• Ani-Magic (Lancaster, CA; Oct. 18-19, 2008)

• Anime NebrasKon (Lincoln, NE; Nov. 16-18, 2007)
• Anime USA (Arlington, VA; Nov. 16-18, 2007)
• Auchinawa (Glasgow, Scotland; Nov. 2008)
• Bakuretsu Con (Colchester, VT; Nov. 9-11, 2007)
• International Manga & Anime Festival (London, UK; Nov. 10-14, 2006)
• Izumicon (Oklahoma City, OK; Nov. 2-4, 2007)
• JaniCon (Jacksonville, FL; Nov. 2-4, 2007)
• Jrock Connection (Santa Clara, CA; Nov. 24-26, 2006)
• Nekocon (Hampton, VA; Nov. 2-4, 2007)
• Oni-Con (Houston, TX; Nov. 21-23, 2008)
• Pacific Media Expo (Los Angeles, CA; Nov. 9-11, 2007)
• SugoiCon (Ft. Mitchell, KY; Nov. 16-18, 2007)
• Tandokucon (Philadelphia, PA; Nov. 9-11, 2007)
• Youmacon (Troy, MI; Nov. 1-4, 2007)

• Anime South (Destin, FL; Dec. 28-30, 2007)
• Comiket (Tokyo, Japan; Dec. 29-31, 2007)
• New York Anime Festival (New York, NY; Dec. 7-9, 2007)