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NC-100Mandatory

Petition for Change of Name

California · Judicial Council of California · Effective July 1, 2026

This form is used to start a case asking the court to officially change a name or the name of a minor child. It asks for the current legal name and the new name that is being requested.

The court describes it as: Start a case to change your name, your minor child's name, or both. If your case involves a change of name related to gender identity, use form NC-200 instead.

Open the official PDFfrom Judicial Council of California

Where this fits in a case

Start a case

Stage: Start a case

This form is used when someone needs to file a case to legally change a name. The instructions advise reading other forms first, depending on the specific situation.

Usually filed by the person starting the case.

Official instructions

How-to guides published by the court for this form.

Common questions

Can I use this form if the name change is about gender identity?
No, if the name change is related to gender identity, you must use form NC-200 instead.

Revision history

No changes recorded since we started tracking this form on October 9, 2026. The current version took effect July 1, 2026.

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