Bay State may refer to:
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, nickname "Bay State," a U.S. state with shores on Massachusetts Bay, Cape Cod Bay, Buzzards Bay and Narragansett Bay
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Bay State College, a private university in Boston, Massachusetts
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Bay State Conference The Bay State Conference, is an interscholastic high school athletic league located in the Metro Boston, Metrowest, and Southeastern Massachusetts ( South Shore) regions of the United States. The Bay State Conference is named after the nickname of ...
, a high school athletic conference in Massachusetts
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''Bay State'' (TV series), the Boston University-produced soap opera
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Bay State Road, a street on the Boston University campus
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Bay State (musical instrument brand), a brand of musical instrument made in the 19th century by John C. Haynes & Co.
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Baystate, a Japanese jazz record label
{{disambiguation