RI-1 may refer to:
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Rhode Island's 1st congressional district
Rhode Island's 1st congressional district is a congressional district in the U.S. state of Rhode Island. It includes all of Bristol and Newport counties, along with parts of Providence County, including most of the city of Providence.
The di ...
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RI-1 (chemical), an experimental oncology drug
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U.S. Route 1 in Rhode Island
U.S. Route 1 (US 1) in Rhode Island
Rhode Island (, like ''road'') is a U.S. state, state in the New England region of the Northeastern United States. It is the List of U.S. states by area, smallest U.S. state by area and the List of s ...
, a portion of a north–south highway in the United States
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