International Attendee Registration Visa Information

International registrants will automatically receive a letter of invitation at the time of registration.

We strongly recommend international attendees review the APS visa information before registering for the annual meeting. To avoid visa-related problems, review the Visa Delays page. For additional information, review the Entering the United States page.

For the March, April and some Division Meetings, a LETTER OF INVITATION will be automatically emailed to you after you register for the meeting. If you do not receive the email, please send an email to Please include LETTER OF INVITATION in the subject, along with the following information

  • Your name as it appears on your passport
  • Your affiliation and mailing address
  • Your submitted abstract title

Allow 5-7 business days to receive your letter of invitation for a visa application.