Can a 15 year old change their last name to their moms last name?

Yes, a 15-year-old can change their last name to their mom's last name, but the process typically requires parental consent and may involve legal procedures. Depending on the jurisdiction, a petition may need to be filed with a court, and the reasons for the name change may need to be justified. It's important to check local laws and possibly seek legal advice to navigate the process correctly.