Wisconsin Petition for Adult Adoption is a legal process in which an adult is adopted by another adult. This type of adoption is allowed by Wisconsin Statute 48.965, which states that a resident of Wisconsin may petition the court for an adult adoption. The parties involved must be at least 18 years of age, and the adoption must be approved by the court for it to be legal. There are two types of Wisconsin Petition for Adult Adoption: stepparent adoption and non-stepparent adoption. In a stepparent adoption, the petitioning adult is the current spouse of the adult being adopted. In a non-stepparent adoption, the petitioning adult is not the current spouse of the adult being adopted. The process for each type of adult adoption is similar, but the petition must include additional information and documents for a non-stepparent adoption. Both types of adult adoption require the filing of a petition, a hearing, and court approval.