What does SOU stand for?

Flight Line, Inc. - ICAO designator (FAAC)

Norfolk Southern Railway - Intermodal shipping container symbol (TVRC)

Scandinavian Ornithological Union - Lund, Sweden (EAIO)

Souchong - Tea trade (ROG)

Sources Public Library - UTLAS symbol

South (ROG)

Southampton - England - Airport symbol (OAG)

Southern Airways - Air carrier designation symbol

Southern Arms Co. - NCIC firearms make code (NCIC)

Southern Petroleum Corp. - Vancouver Stock Exchange symbol

Southern Railway System - AAR code

Southern Thai - Language code (ETLW)

Statens Offentliga Utredningar - Sweden

Statute of Uses - Legal shorthand (LWAP)

System Output Unit - Computer science (VLIE)