HS3

HS3 or HS-3 may refer to:

Transport

Curtiss HS-3, a patrol flying boat built for the United States Navy during World War I
Helicopter Anti-Submarine Squadron 3, a United States Navy unit
High Speed 3, a proposal to improve rail links in northern England

Other uses

HS3, a part of the British HS postcode area
2008 HS3, an asteroid

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