Augustin Lesieux (1877 in Sombrin – 1964) was a French sculptor.
He studied at the École des Beaux-Arts in Arras from 1896 to 1899 and then at Lille before finishing his studies at the École des Beaux-Arts in Paris.
From 1901 he worked in Rodin's studio.
After the 1914-1918 war he worked on many monument aux morts and completed numerous other public works.