Bill Adler is an American music journalist and critic who specializes in hip-hop. Since the early 1980s he has promoted hip-hop in a variety of capacities, including as a publicist, biographer, record label executive, documentary filmmaker, museum consultant, art gallerist, curator, and archivist. He is known best for his tenure as director of publicity at Def Jam Recordings (1984–1990), the period of his career to which the critic Robert Christgau was referring when he described Adler as a "legendary publicist".