Arthur Constantin Krebs (16 November 1850 in Vesoul, France – 22 March 1935 in Quimperlé, France) was a French officer and pioneer in automotive engineering.
Collaborating with Charles Renard, he piloted the first fully controlled free-flight made in the French Army airship La France, which was designed in 1884. The flight covered 8 km (5.0 mi) in 23 minutes. It was with a landing at the starting point. On its seven flights the La France dirigible returned five times to its starting point.
Krebs shared the 1886 Ponti prize of the French Académie des sciences, with Charles Renard, for their contribution to Aerostation.
Krebs inspired Jules Verne, in Verne's novel Robur The Conqueror written in 1886, he writes of "the striking experiments of Captain Krebs and Captain Renard".
In 1888 Krebs and Gustave Zédé designed the first modern French submarine, the Gymnote. The submarine was fitted with the first naval periscope and the first naval electric gyrocompass. The latter allowed the Gymnote to force a naval block in 1890.
From 1884 to 1897 Arthur Krebs modernized the Ville de Paris fire department; not only its equipment but its organisation as well. His work left a lasting impression in this elite corps.
In May 1896 Arthur Krebs patented a new automobile, fitted with an electromagnetic gearbox and a layout of the front wheels which re-centred them when the steering wheel was left alone, today this is known as the Castor angle. The Panhard et Levassor company acquired a license to build 500 cars under the name of Clement-Panhard between 1898 and 1902 featuring this innovation.