A play on the name, Holy Alliance, for a coalition of Russia, Austria, and Prussia in 1815, used in 1855 for Western European alliances with the Ottoman Empire against the interests of Russia, Greece, and most of the Balkans.
- "To destroy this invisible Government, to dissolve the unholy alliance between corrupt business and corrupt politics is the first task of the statesmanship of the day." - 1912 Progressive Party platform.
- a coalition among seemingly antagonistic groups, especially if one is religious, for ad hoc or hidden gain. (See examples under "In literature:")
- parody of same. (See examples under "Unholy Alliance may refer to:")