English abbreviations from cls to cm
- CLS(Chehalis-Centralia Airport)
- CLSA(Contact Lens Society of America)
- CLSI(Clinical and Laboratory Standards Institute)
- CLSNET(Christian Legal Society Network)
- CLSP(Center for Law and Social Policy)
- CLSS(Combat Logistic Support Squadron)
- CLSSA(Cooperative Logistics Supply Support Arrangements)
- CLSU(Christian Legal Society University)
- CLT(Charlotte Douglas International Airport)
- CLTD(Civilian Leadership Training Division)
- CLTG(Center Level Transaction Group)
- CLU(Command launch unit)
- CLUE(Careers Learning Understanding And Exploring)
- CLUG(Clemson Linux Users Group)
- Clun.(Cluniacenses ("Monks of Cluny"))
- CLUSTER(Consortium Linking Universities Of Science And Technology For Education And Research)
- CLV(Caldas Novas Airport)
- Cl. V.(Clarissimus Vir ("Most Illustrious Man"))
- CLW(Clearwater Air Park)
- CLWR(Canadian Lutheran World Relief)
- CLX(Clorinda Airport)
- CLY(Calvi - Sainte-Catherine Airport)
- CLZ(Calabozo Airport)
- CM(Colour-marking or "continue mission")
- C.M.(Causa Mortis ("On occasion of death"))
