- Sep 9 Paul Smet de Naeyer, Belgian politician and count (Prime Minister of Belgium 1896-99, 1899-1907), dies at 70
- Sep 12 Major R B Stewart, cricketer (scored 4 & 9 in S Afr's 1st Test), dies
- Sep 13 Alfred R. Gaul, English composer, dies at 76
Rudolf Diesel
Sep 29 Rudolf Diesel, German engineer (invented the diesel engine), disappears aboard the ship Dresden in the English Channel at 55
