From Wikipedia, the free encyclopedia
SIN can refer to:
- Sex Industry Network (SIN)
- the trigonometric sine function
- Singapore, FIFA trigramme and International Olympic Committee country code
- The IATA Airport Code for Singapore Changi Airport
- Social Insurance Number, a number which may be issued to a person in Canada in furtherance of various government programs
- Sistema de Inteligencia Nacional, the Argentine intelligence services
- Spanish International Network, a Spanish-language American television network, now part of Univision
- SIN Cars, a German-Bulgarian specialist builder of racing and sports cars.
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