Visa Information

Visa information contained on this page has been made available for the convenience of participants. It is strongly recommended that participants consult the U.S. Department of State and Embassy websites well in advance of their trip to obtain official information on traveling to the USA. The whole process of requiring a visa is the sole responsibility of each individual traveler.

Who needs a US visa?

Generally, a citizen of a foreign country who wishes to enter the United States must first obtain a visa.

How to apply for a US visa?

There are several steps to apply for a visa. The order of these steps and how you complete them may vary by U.S. Embassy or Consulate.  Please consult the instructions on the U.S. Embassy or Consulate website.

Letter of invitation

US authorities may request letters of invitation from ICM 2026 participants. You will be able to obtain such a letter once you complete the registration process. Registration will open in January 2025. We remind all participants that this letter is individual and is not meant to replace standard visa and immigration procedures.

Visa requests remain the sole responsibility of each individual traveler and beyond providing a letter of invitation, the ICM Organizing Committee and/or the International Mathematical Union cannot provide further support.

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