"Isn't It Midnight" is a song by the British-American rock band Fleetwood Mac, from their 1987 studio album Tango in the Night. The song was co-written and sung by Christine McVie, with contributions from Lindsey Buckingham and McVie's then-husband Eddie Quintela. "Isn't It Midnight" was the sixth and final single to be released from Tango in the Night in 1988. The cover art for the single features the portrait of Mademoiselle Caroline Rivière. The verse is in E Aeolian with a i-bVII-i-i progression, while the bridge and chorus are in B Aeolian, with a i-bVI-bVII-i progression.