The commitment was reported by multiple recruiting services.
Whitley is a 6-foot-2, 220-pounder from Galena Park, Texas, which is a suberb of Houston.
Scout.com ranks Whitley as the fourth best middle linebacker nationally, while 247sports has him as the No. 5 inside linebacker in the country. Whitley is a consensus four-star prospect on the five-star scale.
Whitley's commitment gives Alabama six members for its Class of 2014.