Walter Sinclair Delamain
| Sir Walter Sinclair Delamain | |
|---|---|
| Sir Walter Delamain | |
| Birth name | Walter Sinclair Delamain | 
| Born | 18 February 1862 Saint Helier, Jersey, Channel Islands | 
| Died | 6 March 1932 (aged 70) Brockenhurst, Hampshire, England | 
| Allegiance | United Kingdom | 
| Branch | Indian Army | 
| Years of service | 1881–1923 | 
| Rank | Lieutenant-general | 
| Battles / wars | Boxer Rebellion World War I | 
| Awards | Knight Commander of the Order of the Bath Knight Commander of the Order of St Michael and St George Distinguished Service Order | 
Lieutenant-General Sir Walter Sinclair Delamain KCB KCMG DSO (18 February 1862 – 6 March 1932) was an officer of the British Indian Army.