| Kaper | Simon | | Volunteer from Holland / Belgium serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | Belgian and Dutch volunteers |
| Kaplan | ? | | Volunteer from Russia (Jewish) serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | Russian volunteers |
| Karavas | John | | Volunteer from Greece serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | Other volunteers |
| Karlsen | Eduard | | Volunteer from Germany serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | German volunteers |
| Karnsseit | Emil | | Volunteer from Germany serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | German volunteers |
| Karstens | G | | Volunteer from Germany serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | German volunteers |
| Kasirils | ? | | Volunteer from Russia (Jewish) serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | Russian volunteers |
| Kattner | P | | Died Modderspruit & Nicholsonsnek 30/10/1899
Volunteer from America (Irish) serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | American volunteers |
| Kauffman | Carl Jacob | | Volunteer from Germany serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | German volunteers |
| Kavanagh | D | | Chicago Corps
Volunteer from America (Irish) serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | American volunteers |
| Keightly | Herbert | | Volunteer from America (Irish) serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | American volunteers |
| Keijzer | G M | | Volunteer from Holland / Belgium serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | Belgian and Dutch volunteers |
| Keimer | ? | | Volunteer from Germany serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | German volunteers |
| Keizer | Lodewijk | | Volunteer from Holland / Belgium serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | Belgian and Dutch volunteers |
| Kemp | Charles I | | Volunteer from Sweden serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | Scandinavian volunteers |
| Kemper | Frederick | | Volunteer from Germany serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | German volunteers |
| Kennedy | Joe | | Volunteer from America (Irish) serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | American volunteers |
| Kennedy | Van Dam, Hugo Floris Alexander | | Volunteer from Holland / Belgium serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | Belgian and Dutch volunteers |
| Kepner | ? | | Volunteer from America (Irish) serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | American volunteers |
| Kesting | Jean Jacques | | Volunteer from Holland / Belgium serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | Belgian and Dutch volunteers |
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