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Attendees: Visa Information

The site has information about obtaining a visa for those traveling to the United States. It links to websites for U.S. embassies and consulates worldwide. The embassy and consulate websites have very helpful information about procedures, timelines, communities served, required documentation, and fees.

International registrants should be particularly aware and careful about visa requirements and should plan travel well in advance.

The Association for Computing Machinery does not issue formal invitation letters for visas. However, we can issue a visa support letter, which describes the technical nature of the conference. For visa support letters, please send all requests to with the following information:

  1. Name as it appears on your passport
  2. Current Mailing address
  3. The name of the conference you wish to attend
  4. If you have any papers accepted for the conference, please indicate whether you are the sole author or a co-author, and provide the full title of the document
  5. Registration confirmation number