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GF-300

Petition for Adult Adoption

Wisconsin · Wisconsin Court System · Effective March 6, 2025

This form is used to ask the court to approve the adoption of another adult. The person filling it out must state that they are an adult resident of the county and are asking the court for the adoption order.

The court describes it as: To ask the court to approve an adoption of an adult.

Open the official PDFfrom Wisconsin Court System

Where this fits in a case

Start a case

Stage: Start a case

This form is used when an adult wishes to petition the court to legally adopt another adult. The petition requires information about both the petitioner and the person to be adopted.

Usually filed by the person starting the case.

Official instructions

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

Common questions

What is this form for?
This form is a Petition for Adult Adoption, which asks the court to approve the adoption of an adult. Great Wisconsin Statutes Chapter 882 governs this process.
What information do I need to provide?
The form asks for the petitioner's information, the name and details of the person to be adopted, and requires the consent of the adoptee and the petitioner's spouse.

Revision history

No changes recorded since we started tracking this form on October 10, 2026. The current version took effect March 6, 2025.

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