Skip to content
LitigationForms
NC-300Mandatory

Petition For Recognition of Adult's Change of Gender And Sex Identifier, Name Change, And Issuance of New Certificates

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

This form is used to start a court case asking the judge to officially recognize a person's change in gender and sex identifier, and also to change their name and get new official certificates.

The court describes it as: Start a case to get a court decision (order) recognizing your gender and (if you want) to change your name.

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 by an adult who is 18 or older who wants the court to recognize a change in gender and sex identifier, and potentially change their name and get new birth or marriage certificates.

Usually filed by the person starting the case.

Official instructions

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

Common questions

Who should file this form?
The petitioner, who is the person requesting the court order, files this form.
Does this form help get a new birth certificate?
The form asks for an order for the issuance of new certificates, but the text notes that an administrative process might be used instead for some changes.
Do I need a lawyer to file this?
The form includes spaces for an attorney's signature if the petitioner is represented by one.

Revision history

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

Related forms

  • NC-100

    Petition for Change of Name

    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.

    MandatoryFillable PDF3 translations
  • NC-100-INFO

    Instructions for Filing a Petition for Change of Name

    This form provides instructions for filing a request to change a name in court. It explains what documents are needed and where the request must be filed depending on the person's residency.

    OptionalFillable PDF3 translations
  • NC-110

    Name and Information About the Person Whose Name is to be Changed (Attachment to Petition for Change of Name)

    This form is an attachment used when someone files a request to change a name. It asks for details about the person whose name is changing, including their current and desired new name, and the reason for the change.

    MandatoryFillable PDF3 translations
  • NC-110G

    Supplemental Attachment to Petition for Change of Name (Declaration of Guardian)

    This form is a supplemental attachment used when a guardian is asking the court to change a minor child's name. It asks for details about the child's relatives and explains why the name change is in the child's best interest.

    MandatoryFillable PDF
  • NC-200

    Petition for Change of Name to Conform to Gender Identity

    This form is used to start a case asking the court to change a person's name to match their gender identity. It asks for details about the current name, the proposed new name, and information about the person applying for the change.

    MandatoryFillable PDF3 translations
  • NC-200-INFO

    Instructions for Filing a Petition for Change of Name to Conform to Gender Identity

    This form provides instructions for filing a request to change a name to match a person's gender identity. It explains which court to file in and what other forms are needed for the process.

    OptionalFillable PDF3 translations
  • NC-210G

    Supplemental Attachment to Petition for Change of Name to Conform to Gender Identity (Declaration of Guardian)

    This form is a supplemental attachment used when asking the court to change a child's name to match their gender identity. It asks the person filing the form to provide details about the child's relatives and the person acting as the guardian.

    MandatoryFillable PDF3 translations
  • NC-250

    Notice of Hearing on Petition

    This form tells you that the court has set a date, time, and place for a hearing regarding a name change petition. The judge will review any objections that were filed against the name change request.

    OptionalFillable PDF3 translations