An Acknowledgment of Paternity (AOP) is a legal document that allows parents who aren't married to establish legal paternity.
Who can complete an Acknowledgment of Paternity (AOP)?
Biological parents who want to establish their child’s legal rights to his or her father can voluntarily establish paternity with an Acknowledgment of Paternity (AOP). If you would like to know more, please view our informational video.

How to File an Acknowledgment of Paternity (AOP)
To complete and file an AOP, both parents must work with an AOP-certified entity. AOP-certified entities have been trained by the Office of the Attorney General to help parents voluntarily establish paternity.
If you need assistance completing an AOP — or if the other parent is in the military, incarcerated, or living in a different city or state submit your request online, or call the AOP Hotline.
AOP Hotline
(866) 255-2006
Find an AOP certified entity near you.
Important: Minors can sign the AOP without parental consent.
Common AOP Questions
When filling out the AOP with your AOP-certified entity, several common situations may come up. Click on the topic below to learn more.