Arena rock (also known as AOR, melodic rock, pomp rock, stadium rock, corporate rock or dad rock) is a style of rock music that became mainstream in the 1970s. It typically involves radio-friendly rock music that was designed to be played for large audiences.

As hard rock and pop rock became increasingly popular, groups began creating material inherently designed for performance to crowds and major concerts. Arena rock also developed from their use of more commercially oriented sounds that were intended for radio play. The highly produced music, including both upbeat, dramatic songs and slower power ballads, features strong emphasis on melody and frequently employs anthemic choruses. Other major characteristics include prominent guitar effects and the use of keyboard instruments. Typical themes of arena rock lyrics include love, heartbreak, angst, and sentimentality.

Many of the above labels are used pejoratively, and discussions over music criticism often delve into the question of whether musicians' focus on rock spectacle and mass appeal results in compromised artistic merit, particularly in terms of the difference between the interests of the "middlebrow" populace versus other listeners. Interest in arena rock is stereotypically associated with working-class to middle-class men living in either Canada or the United States (including so-called "yuppies"), which has been cited as the basis for condescending prejudice over social status in some criticisms. However, the style of music has been highly successful worldwide, particularly in terms of touring.