Zachary Philip Wylde (born January 14, 1967 in Jersey City, NJ) is currently the lead guitarist in Ozzy Osbourne's band. He also plays lead in his own band, Black Label Society, who are typically part of Ozzy's Ozzfest tour.

Zakk became a well-known guitarist after becoming lead guitarist, and co-writer, for Ozzy Osbourne. He sent Ozzy a demo tape in 1987 and was hired to replace guitarist Randy Rhoads in Osbourne's band after only one audition.