Visa Information

International registrants should plan travel well in advance, and should be careful and aware of visa requirements. All visa inquiries must be handled by ACM headquarters.  Please note that ACM does not issue formal invitation letters for visas. However, ACM can issue a visa support letter. For visa support letters, please send all requests to with the following information.
  1. Name and mailing address as it appears on your passport
  2. The name of the conference you wish to attend
  3. Registration confirmation number
  4. If you are the author of any papers accepted for the conference, please provide the title
  5. Fax number
In addition, the following sites provide information about obtaining a visa for traveling to the US: and These sites have links to websites for U.S. embassies and consulates worldwide that provide very helpful information about procedures, timelines, communities served, required documentation, and fees.