Millis Jefferis
| Sir Millis Jefferis | |
|---|---|
| Born | 9 January 1899 Merstham, Surrey | 
| Died | 5 September 1963 (aged 64) Porthgwarra, Cornwall | 
| Allegiance | United Kingdom | 
| Branch | |
| Years of service | 1918–1953 | 
| Rank | Major-general | 
| Service number | 15844 | 
| Unit | Royal Engineers | 
| Battles / wars | World War I Waziristan Campaign Second World War | 
| Awards | Knight Commander of the Order of the British Empire Commander of the Order of the British Empire Military Cross Mentioned in dispatches Norwegian War Cross with sword | 
| Other work | Deputy Engineer-Chief India Engineer-in-Chief Pakistan Chief superintendent of the Military Engineering Experimental Establishment | 
Major-General Sir Millis Rowland Jefferis KBE MC (9 January 1899 – 5 September 1963) was a British military officer who founded a special unit of the British Ministry of Supply which developed unusual weapons during the Second World War.