SYD


AcronymDefinition
SYDSeitokai Yakuindomo (manga and anime)
SYDSum-of-Years Digits
SYDSum-Of-The-Years'-Digits (depreciation method; also seen as SOYD)
SYDSeries Yaw Dampner (aviation)
SYDStonewall Young Democrats (est. 2004; West Hollywood, CA)
SYDSystem Drawings
SYDSubject Your Discretion (air traffic control)
SYDSimply Your Driver (vehicle service)
SYDSlay Your Dragon
SYDSydney, New South Wales, Australia - Sydney Municipal (Airport Code)