- SKC(Selkirk Crew)
- SKCC(Sidney Kimmel Cancer Center)
- SKCM(Master Chief StoreKeeper)
- SKCS(Senior Chief Storekeeper)
- SKCV(Street Kids Community Villages)
- SKD(Schedule)
- SKE(Skien Airport, Geiteryggen)
- SKF(Lackland Air Force Base / Kelly Field Annex)
- SKFE(Super-Kill Fire ant Exterminator)
- SKG(Makedonia Airport)
- SKH(Shoot, Kill, Hack)
- SKI(Skikda Airport)
- SKIL(Stanford's Key to Information Literacy)
- SKIN(Share Knowledge, Inspire, Nurture)
- SKIP(Special Kids, Involved Parents)
- SKIPPER(Shaking Kills, Instead, Parents Please Educate and Remember)
- SKI-USF(Shotokan Karate International-United States Federation)
- SKK(Shaktoolik Airport (FAA: 2C7))
- SKL(Systems Knowledge Link)
- SKM(Seltzer Kaufmann Marketing)
- SKN(Stokmarknes Airport, Skagen)
- SKO(Samaratins, KELY, and Outward Bound Hong Kong)
- SKOT(Sredni Kolowy Opancerzny Transporter (armoured personnel carrier))
