- K -
| Abbreviation | Meaning |
|---|---|
| k | knots |
| K | King or King's |
| K&BMHRCAMC | Kingston & Barriefield Military Hospital, Royal Canadian Army Medical Corps |
| KAR | King's African Rifles |
| KBO | Kildare Barracks Ottawa |
| KBR | Kellogg Brown and Root |
| KC | King's Commendation |
| KCB | Knight Commander, Order of the Bath |
| KCB | Knight Commander of the Bath |
| KCMG | Knight Commander of the Order of St. Michael and St. George |
| KCMG | Knight Commander of Saint Michael and Saint George |
| KEdwH | King Edward's Horse |
| Kent R | Kent Regiment |
| KentCycBn | Kent Cyclist Battalion |
| KG | Knight of the Order of the Garter |
| KHM | King's Harbour Master |
| KIA | Killed In Action |
| KMB | Kabul Multi-National Brigade |
| KMHRCAMC | Kingston Military Hospital, Royal Canadian Army Medical Corps |
| KMHRCAMC | Kitchener Military Hospital, Royal Canadian Army Medical Corps |
| KMW | Senior Polish Naval Officer in London |
| KORC | King's Own Rifles of Canada |
| KORofC | King's Own Rifles of Canada |
| KOSB | King's Own Scottish Borderers |
| KOYLI | King's Own Yorkshire Light Infantry |
| KPHIRCAMC | Kingston Permanent Hospital Installation, Royal Canadian Army Medical Corps |
| KPIB | Key Points Investigation Bureau |
| KR | King's Regulations |
| KR | Kent Regiment |
| KR&ACI | King's Regulations & Air Council Instructions |
| KR&AI | King's Regulations & Admiralty Instructions |
| KR&O | King’s Regulations and Orders |
| KR&O | Kings Regulations & Orders |
| KRandAI | King's Regulations and Admiralty Instructions |
| KRCN | King's Regulations for the Government of the Canadian Naval Service |
| KRR | King's Royal Rifle Corps |
| KRRC | King's Royal Rifle Corps |
| KRRifC | King's Royal Rifle Corps |
| KSLI | King's Shropshire Light Infantry |
| KTDRCA | Kine Theodolite Detachment, Royal Canadian Artillery |
| KTS | Composite Training School (Royal Canadian Air Force) |
| KUF | Polish Drafting Officer, London |