Proviso

Proviso means a conditional provision to an agreement. It may refer to

• Proviso Township, Cook County, Illinois, United States
  • Proviso Township High Schools District 209 that comprises
    • Proviso East High School
    • Proviso West High School
    • Proviso Mathematics and Science Academy
• Wilmot Proviso, an American law to ban slavery in annexed territory from Mexico proposed by David Wilmot in the 1840s
• Lockean proviso, a feature of John Locke's labour theory of property