James Alan Johnston (born June 19, 1952) is an American music composer and musician best known for his time with professional wrestling promotion, WWE. Over the course of three decades, he composed and recorded entrance theme music for the promotion's wrestlers, and compilations of his music released by WWE charted highly in several countries.

Writing and recording mostly by himself, he wrote over 10,000 pieces of music, many of which are as highly regarded as the wrestlers themselves. In later years, he regularly collaborated with mainstream hip hop and rock musicians such as Motörhead, Disturbed, Kid Rock, Ice-T, Run-DMC, Mariah Carey, and Our Lady Peace for new music and different takes on existing entrance music. Johnston was released from WWE in 2017, replaced in the role by CFO$.