| McKay | W B | | Trooper | Natal 1906 (1)
Source: Recipients of the Natal 1906 Medal | Natal Police |
| McKay | W C | | | 1st Battalion
Source: QSA and KSA medal rolls | Gordon Highlanders |
| McKay | W G | | Trooper | BSACM Rhodesia 1896 (0).
Source: BSACM rolls | Bulawayo Field Force |
| McKay | W H | | Trooper | BSACM Rhodesia 1896 (0).
Source: BSACM rolls | Salisbury Field Force |
| McKay | W J | | Trooper | Natal 1906 (1)
Source: Recipients of the Natal 1906 Medal | Royston's Horse |
| Mckay | W J | | | Source: QSA and KSA medal rolls | New Zealand, 5th Contingent (Imperial Bushmen) |
| McKay | W J | | Trooper | Natal 1906 (1)
Source: Recipients of the Natal 1906 Medal | Northern District Mounted Rifles |
| McKay | W J R | 3330 | Private | QSA (5).
Source: QSA medal rolls | 14th (The King's) Hussars |
| McKay | W S | | Trooper | Source: Nominal roll in WO127 | Colonial Scouts |
| McKay | Walter Arthur | 3573 | Trooper | Source: OZ-Boer database | New South Wales, 3rd Contingent NSW Imperial Bushm |
| McKay | William | | | Source: Attestation paper in WO126 | Canadian Scouts |
| McKay | William | 23902 | Trooper | Source: QSA Medal Rolls | Imperial Yeomanry |
| McKay | William | 23902 | Sergeant | Source: Nominal roll in WO127 | Thorneycroft's Mounted Infantry |
| McKay | William | 185 | Private | Source: OZ-Boer database | Victoria, 6th Battalion Australian Commonwealth Ho |
| McKay | William | 39269 | Trooper | Served 05 Nov 01 to 28 May 02. Discharged, completion of service
Source: Nominal roll in WO127 | Canadian Scouts |
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