Williams, a rising junior from Daniel High School, was offered a scholarship earlier this week before making his decision official in the last 24 hours.
It was his first official scholarship offer.
Williams is Clemson's second commitment from Daniel in the last three months. The Tigers also secured the commitment of four-star defensive back/wide receiver DeAndre Hopkins (2010) in late March.
"There have been so many colleges expressing interest in me lately," Williams said in a recent interview. "Schools like Alabama, Clemson, Tennessee, Oregon, South Carolina, North Carolina, and Louisville, just to name a few.
"A lot of schools have been inviting me up to their campus to check them out."
Last season, Williams finished his sophomore campaign with 87 tackles, including nine for loss and seven sacks.
Williams participated in Clemson's first summer camp session earlier this week but was on hand this morning watching the second session in-person.
He is the first verbal commitment for the Tigers in the class of 2011.
The Clemson coaching staff has already secured the verbal commitment of five players for the class of 2010- all from South Carolina.
"He has good size already for a defensive tackle," notes Scout.com analyst Miller Safrit. "He plays with good strength in his lower body, great pursuit to the ball, and can play with leverage when he is not tired. Needs to continue to work in the weight room and in conditioning."
Daniel head coach Randy Robinson talked with CUTigers.com this morning about his commitment. We will have more on this breaking story shortly.