| | Name | Given Name | Initials | Regiment | Unit | Cemetery | Country | Locality | Date of Death |
| | SIFAKU | KLEINBOOI | K | South African Native Labour Corps | 4th Bn. | HOLLYBROOK MEMORIAL, SOUTHAMPTON | United Kingdom | Hampshire | 1917-02-21 |
| | SIGIDI | HLONGWANA | H | South African Native Labour Corps | 5th Bn. | HOLLYBROOK MEMORIAL, SOUTHAMPTON | United Kingdom | Hampshire | 1917-02-21 |
| | SIKOTA | THEODORE GEORGE | T G | South African Native Labour Corps | Medical Section | HOLLYBROOK MEMORIAL, SOUTHAMPTON | United Kingdom | Hampshire | 1917-02-21 |
| | SIKWAYO | BEN | B | South African Native Labour Corps | Medical Section | HOLLYBROOK MEMORIAL, SOUTHAMPTON | United Kingdom | Hampshire | 1917-02-21 |
| | SILIKA | MOLEFI | M | South African Native Labour Corps | 4th Bn. | HOLLYBROOK MEMORIAL, SOUTHAMPTON | United Kingdom | Hampshire | 1917-02-21 |
| | SILOSINI | JONAS | J | South African Native Labour Corps | 4th Bn. | HOLLYBROOK MEMORIAL, SOUTHAMPTON | United Kingdom | Hampshire | 1917-02-21 |
| | SILWANE | FRANS | F | South African Native Labour Corps | 4th Bn. | HOLLYBROOK MEMORIAL, SOUTHAMPTON | United Kingdom | Hampshire | 1917-02-21 |
| | SINQANA | JULY | J | South African Native Labour Corps | Medical Section | HOLLYBROOK MEMORIAL, SOUTHAMPTON | United Kingdom | Hampshire | 1917-02-21 |
| | SITEBE | MQOBO | M | South African Native Labour Corps | 5th Bn. | HOLLYBROOK MEMORIAL, SOUTHAMPTON | United Kingdom | Hampshire | 1917-02-21 |
| | SITLAKO | KOOS | K | South African Native Labour Corps | 4th Bn. | HOLLYBROOK MEMORIAL, SOUTHAMPTON | United Kingdom | Hampshire | 1917-02-21 |