Visto n' Visa
Blog
Notícias e artigos
Destinations
Careers
Immigrants

Do I need notarization for the letters?

Notarization is not required for support letters in the O visa, but clarity, truthfulness, and signatures of qualified professionals are essential to ensure credibility.

Written by

Victoria Harper

Editor-in-Chief

Updated on March 26, 2026
2 min read
Share

It is important to clarify that, in O visa applications for the United States, the authenticity and integrity of the documents presented are fundamental for the success of the process. Careful preparation of each item can make a difference, and complying with immigration laws is essential to avoid future problems.

In the specific case of recommendation or support letters, there is usually no formal requirement for notarization. What is expected is that the letters contain accurate and detailed information about the candidate”s achievements and professional recognition, and that they are signed by experts or authorities who can attest to such skills. Thus, even without notarization, a well-prepared and signed document can be sufficient to demonstrate the authenticity of the content.

However, if there is any doubt or specific guidance in your case, it is always advisable to check with official sources or with immigration specialists. This precaution helps avoid misunderstandings and falling for scams or promises of miracle solutions. Companies or marketing campaigns that guarantee results without proper oversight may represent a risk, so verifying information and aligning with US immigration laws remain prudent actions.

In summary, for the support letters used in the O visa process, notarization is not a standard requirement. However, clarity, truthfulness, and the signature of recognized professionals in the field can significantly contribute to the credibility of your process. Always inform yourself with reliable sources and stay alert to the official guidelines of the United States Citizenship and Immigration Services to ensure that all requirements are properly fulfilled.

Learn more about O-1 Visa

Requirement
Extraordinary ability
Initial validity
3 years
Extension
1 year at a time (unlimited)
Processing
2-4 months
All about O-1 Visa
Victoria Harper

Editor-in-Chief

Meet the author

Leading journalism and editorial content at Visto n’ Visa, Victoria helps make immigration topics clear, trustworthy, and easy to understand. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.

Victoria's tips

Do I need notarization for the letters?

Notarization is not required for support letters in the O visa, but clarity, truthfulness, and signatures of qualified professionals are essential to ensure credibility.

Recommended reading about O-1

More content about O-1

Feriados nos EUA: guia cultural para imigrantes Living Abroad
Victoria Harper Victoria Harper

US Holidays: A Cultural Guide for Immigrants

Discover the major American holidays, their traditions, and how participating in them helps immigrants connect with the culture of the…