Proviso means ''a conditional provision to an agreement''. It may refer to
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Proviso Township, Cook County, Illinois
Proviso Township is one of 29 townships in Cook County, Illinois, United States. As of the 2010 census, its population was 151,704. It was organized in 1850 and originally named "Taylor", but shortly afterward its name was changed to make referen ...
, United States
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that comprises
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Proviso East High School
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Proviso West High School
Proviso West High School (PWHS) is a public high school located in Hillside, Illinois, United States. It is a part of Proviso Township High Schools District 209, and was opened in 1958. Its sister schools are Proviso East High School and Provi ...
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Proviso Mathematics and Science Academy
Proviso Mathematics and Science Academy is a selective enrollment high school in Forest Park, Illinois, United States that opened its doors to 126 freshmen in 2005. It is one of the newest schools in the Proviso Township High Schools District 20 ...
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Wilmot Proviso, an American law to ban slavery in annexed territory from Mexico proposed by David Wilmot in the 1840s
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Lockean proviso, a feature of John Locke's labour theory of property
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