? and the Mysterians (often rendered Question Mark and the Mysterians) are an American garage rock band from Bay City and Saginaw in Michigan, who were initially active between 1962 and 1969.
Much of the band's music consisted of electric organ-driven instrumentals, and an enigmatic image inspired by the science fiction film The Mysterians. In addition, the band's sound was also marked by raw-resonating lead vocals of "?" (Question Mark), making Question Mark and the Mysterians one of the earliest groups whose musical style is described as punk rock. Through their music, the group was recognized as a template for similar musical acts to follow.