English abbreviations from syc to syn
- SYC(Save Your Children)
- SYD(Sydney Airport)
- SYDP(Six Year Defense Plan)
- SYE(Senior Year Experience)
- SYF(Silva Bay Seaplane Base)
- SYG(Springfield Youth Group)
- SYH(Sweeney Youth Homes)
- SYI(Shelbyville Municipal Airport (Bomar Field))
- SYJ(Sirjan Airport)
- SYL(Roberts Army Heliport)
- SYM(Stubbers Young Mariners Sailing club)
- SYN(Stanton Airfield)
- Syn.(Synodus ("Synod"))
