No, if you are a U.S. resident you must be at least 18 years of age to open an account on Webull. Its offering does not currently support custodial accounts either, so if you are a parent or guardian who would like to open an custodial brokerage account or tax-advantaged educational investing account for a child then a competitor like Fidelity, which even has a dedicated mobile app for Youth investing, would likely serve your purpose better.