| Prerogative writs |
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| Administrative law |
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| General principles |
| Grounds for judicial review |
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Administrative law in common law jurisdictions |
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Administrative law in civil law jurisdictions |
| Related topics |
In the English-American common law, quo warranto (Medieval Latin for "by what warrant?") is a prerogative writ issued by a court which orders someone to show what authority they have for exercising some right, power, or franchise they claim to hold. The writ of quo warranto still exists in the United States, although it is uncommon, but it has been abolished in England and Wales. Quo warranto is also used, with slightly different effect, in the Philippines.