| Johnston | D W | | | Source: WO100/226 | Civil Surgeon |
| Johnston | D W | | | Source: Nominal roll in WO127 | Scottish Horse |
| Johnston | D W | | Surgeon | CGHGSM (1) Transkei
Source: Roll of the CGHGSM | Baker's Horse |
| Johnston | Daniel | | | Source: QSA and KSA medal rolls | New Zealand, 10th Contingent |
| Johnston | David | 3 | Captain | WO100/247p63. QSA (0) | Matatiele European Reserve |
| Johnston | David | 8482 | Private | Source: QSA Medal Rolls | 19th Company, 6th Btn, IY |
| Johnston | David | 43883 | Trooper | No known Company. Served in 39th Btn IY
Source: QSA Medal Rolls | Imperial Yeomanry |
| Johnston | David | | | Source: QSA and KSA medal rolls | 17th Battery, RFA |
| Johnston | David | 30682 | Trooper | Source: Nominal roll in WO127 | Prince of Wales Light Horse |
| Johnston | David | | | Source: QSA and KSA medal rolls | Griquatown Defence Corps |
| Johnston | David | 9178 | Private | Source: OZ-Boer database | New Zealand, 10th Contingent |
| Johnston | David M W | | Surgeon Major | Served 10 Jan 01 to 07 Jul 02. Resigned
Source: Nominal roll in WO127 | Scottish Horse |
| Johnston | David William | | Lieutenant Colonel | Born at Newhaven Oct 12, 1856. He is principal medical officer to the Transvaal Volunteers, and commands the Vol. Medical Staff Corps. | Unknown |
| Johnston | Dick Cowper | 8006 | Trooper | Source: Nominal roll in WO127 | Rimington's Guides |
| Johnston | Donald | | | 2nd Battalion
Source: QSA and KSA rolls | Imperial Light Horse |
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