The O-3 visa is the family-linked category for spouses and unmarried children under 21 of O-1 and O-2 beneficiaries. It allows qualifying family members to accompany the principal visa holder and remain in the United States for the same general period of admission.
This category is tied to the principal case. It does not replace the main filing and it does not create an independent work category. If you are still mapping the relationship between the principal and dependent visas, review the full O visa overview first.
Good planning starts with the main beneficiary timeline. When the O-1 or O-2 filing is organized clearly, the related O-3 process is usually much easier to document and manage.

