| k | killed |
| KA | Knight of St Andrew, Order of Barbados |
| ka | killed in action |
| KAR | King's African Rifles |
| kas | killed on active service |
| KB | Knight of the Bath; Knight Bachelor; Knight Banneret |
| KBE | Knight Commander, Order of the British Empire |
| KC | King's Counsel |
| KCB | Knight Commander, Order of the Bath |
| KCH | Knight Commander, Hanoverian Order; King's College Hospital |
| KCHS | Knight Commander, Order of the Holy Sepulchre |
| KCIE | Knight Commander, Order of the Indian Empire |
| KCL | Kings-College London |
| KCLJ | Knight Commander, Order of St Lazarus of Jerusalem |
| KCMG | Knight Commander, Order of St Michael and St George |
| KCSG | Knight Commander, Order of St Gregory the Great |
| KCSI | Knight Commander, Order of the Star of India |
| KCSS | Knight Commander, Order of St Silvester |
| KCVO | Knight Commander, Royal Victorian Order |
| KDG | King's Dragoon Guards |
| KEO | King Edward's Own |
| KG | Knight, Order of the Garter |
| KGO | King George's Own |
| KGStJ | Knight of Grace, Order of St John of Jerusalem |
| KH | Knight, Hanoverian Order |
| KHC | Honorary Chaplain to the King |
| KHS | Honorary surgeon to the King; Knight, Order of the Holy Sepulchre |
| KJStJ | Knight of Justice, Order of St John of Jerusalem |
| KLJ | Knight, Order of St Lazarus of Jerusalem |
| KM | Knight of Malta |
| KORR | King's Own Royal Regiment |
| KOSB | King's Own Scottish Borderers |
| KOYLI | King's Own Yorkshire Light Infantry |
| KP | Knight, Order of St Patrick |
| KPM | King's Police Medal |
| KRH | King's Royal Hussars |
| KRRC | King's Royal Rifle Corps |
| KS | King's Scholar; Kansas |
| KSG | Knight, Order of St Gregory the Great |
| KSJ | Knight, Order of St John of Jerusalem (Knights Hospitaller) |
| KSLI | King's Shropshire Light Infantry |
| KStJ | Knight, Most Venerable Order of the Hospital of St John of Jerusalem |
| KT | Knight, Order of the Thistle |
| ktd | knighted |
| KY | Kentucky |