Étienne Adolphe Piot (c. 1825 – c. 1910) was a French painter known for his portraits of beautiful young women. He exhibited in the Paris Salons from 1850 to 1909. Little is known about his life.
Étienne-Adolphe Piot was born in Digoin, Saône-et-Loire, France. He moved to Paris and studied under Léon Cogniet. He first exhibited at the Paris Salon in 1850, so would probably have been born in the 1820s. In 1860 he was among the painters whose work was shown at the Exposition de Bourdeaux. In 1864 he was living in New York City, and that year exhibited a portrait at the National Academy of Design. In 1869 he was again living in Paris, at 21 quai Malaquais in the 6th arrondissement. Up to 1876 he exhibited under the name of Adolphe Piot. After then he began to also use the names Adolphe-Étienne Piot and Étienne-Adolphe Piot.
In 1873 Adolphe Piot was described as "a Parisian painter of some name in treating Italian subjects". He was very successful commercially, taking advantage of the increasing demand for portraits from wealthy Parisians. During the Belle Époque every debutante had to have her portrait painted, and Piot was skilled in making captivating portraits.[Piot became a member of the Société des Artistes Français in 1883. In 1890 he received an honorable mention for the work he exhibited at 1889 Exposition Universelle. His last Salon entry seems to have been submitted in 1909