| Nathaniel Barnardiston | |
| Birth Date: | 29 November 1858 |
| Birth Place: | Sudbury, Suffolk, England[1] |
| Allegiance: | United Kingdom |
| Branch: | British Army |
| Serviceyears: | 1878–1919 |
| Rank: | Major General |
| Commands: | 39th Division |
| Battles: | |
| Awards: | Companion of the Order of the Bath Member of the Royal Victorian Order Grand Officer of the Military Order of Christ (Portugal) |
Major General Nathaniel Walter Barnardiston, (29 November 1858 – 18 August 1919) was a senior British Army officer.
Barnardiston was commissioned into the 77th (East Middlesex) Regiment of Foot in 1878. After seeing active service in the Second Boer War, he became military attaché to Brussels, The Hague and the Scandinavian Courts in 1902, Assistant Commandant at the Royal Military College, Sandhurst in 1906 and assistant director of Military Training in 1910.[2] He saw action in the First World War during the Siege of Tsingtao in autumn 1914,[3] before becoming General Officer Commanding 39th Division in August 1915, six months after being promoted to major general. He went on to be Chief of the British Military Mission to Portugal, for which he was appointed a Grand Officer of the Military Order of Christ, before his death in August 1919.[2]