Léon Hatot (1883–1953) was a French clockmaker and jeweller. After training at the watchmaking school and the art school in Besançon, he opened a workshop there in 1905 making cases from precious metals. In 1911, he took over the Bredillard company in Paris. From 1923, he made electric ATO pendulettes with engineer Marius Lavet. Hatot received the Grand Prix at the 1925 Exposition internationale des Arts décoratifs et industriels modernes in Paris for his collection of Art Deco electric clocks. In 1933, he took over the Paris clockmaking business of Jean-Paul Garnier.