If you were born on US soil then yes. Make sure you have a copy of your birth certificate and then contact the US embassy for more details.
The U.S. Embassy is located at 9 Mambilla, Maitama District, Abuja. The telephone number is (9) 523-0916. The U.S. Consulate General is located at 2 Walter Carrington Crescent, Victoria Island, Lagos. The telephone number is (1) 261-0050. The e-mail address for the Consular Section in Lagos is: [email protected].