SPY is a three-letter acronym that may refer to:

• SPDR S&P 500 Trust ETF, NYSE symbol

• Mowag Spy, a military vehicle

• SPY ACT (Securely Protect Yourself Against Cyber Trespass), a 2005 US proposed cyber-security regulation

• The IATA airport code for San Pédro Airport, Ivory Coastyobi

See also

• Spy (disambiguation)

• AN/SPY-1 and AN/SPY-3, U.S. Navy radars