SDY may refer to:
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Sandy railway station, Bedfordshire, England (Station code)
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Sidney-Richland Municipal Airport, Montana, United States (IATA Airport Code)
*the
Amtrak
The National Railroad Passenger Corporation, Trade name, doing business as Amtrak (; ), is the national Passenger train, passenger railroad company of the United States. It operates intercity rail service in 46 of the 48 contiguous United Stat ...
station code for
Schenectady, NY
Schenectady ( ) is a city in Schenectady County, New York, United States, of which it is the county seat. As of the 2020 census, the city's population of 67,047 made it the state's ninth-most populous city and the twenty-fifth most-populous ...
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