Riot V, formerly known as Riot, is an American heavy metal band formed in New York City in 1975 by guitarist Mark Reale. Achieving peak success and popularity during the early 1980s, the band has continued a long-running successful career. Riot's sound initially started out as straightforward heavy metal, but since their 1988 release Thundersteel, their musical style has shifted a little towards power metal.

Mark Reale was an American guitarist and songwriter who founded and led the heavy metal band Riot in 1975, which experienced success and popularity in the early 1980s. Reale was the sole constant member of the band, as well as its creative force. After Reale's death in 2012, remaining members of the band reformed the group a year later under the name Riot V.