"Am I Going Insane (Radio)" is a single by the band Black Sabbath on the 1975 album Sabotage. Although common conception is that the suffix "Radio" was said to be added to the title because it was made for the purpose of being played on the radio, drummer Bill Ward said that it was Cockney rhyming slang for "mental"; radio-rental. Critics have called it ironic that all Black Sabbath members except Tony Iommi were later clinically depressed.

Although happy with most of the songs on Sabotage, lead singer Ozzy Osbourne did not like the responses he got with "Am I Going Insane (Radio)" or "Supertzar." Due to Osbourne's implication that the two tracks in particular were distractions on what would otherwise be a perfect album. AllMusic reviewers claimed that the song was unrecognizable for Black Sabbath and that it was a reckless attempt to change the band's identity. Despite Osbourne's feeling towards the song and negative reviews its popularity caused it to appear as the only track from Sabotage on Sabbath's greatest hits album We Sold Our Soul for Rock 'n' Roll.

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