Rudolf Diesel (March 18, 1858 - September 30, 1913) is the inventor of the Diesel engine and is of German nationality. He was born in Paris and died on the English Channel.

Rudolf Diesel developed the idea of the compression ignition engine during the last decade of the 19th century, receiving a patent for the device on February 23, 1893 and building a functional prototype in early 1897 while working at the MAN plant at Augsburg. This 'Diesel engine' was named after him. Originally it was known as the "oil engine".

Diesel died in September 1913 in mysterious circumstances: He disappeared on a cross-channel ferry.

See also: Diesel (disambiguation)