1800 births

Jean-Baptiste Fresez (1800–1867) was Luxembourg's most important 19th-century painter. He is remembered above all for his almost photographic images of the City of Luxembourg.

Félix-Archimède Pouchet (26 August 1800 – 6 December 1872) was a French naturalist and a leading proponent of spontaneous generation of life from non-living materials, and as such an opponent of Louis Pasteur's germ theory. He was the father of Georges Pouchet (1833–1894), a professor of comparative anatomy.
From 1828 he was director of the Rouen Jardin des Plantes. Later, in 1838, he became professor at the School of Medicine at the University of Rouen. His major scientific work Hétérogénie was published in 1859. He also wrote a layperson's encyclopedia The Universe, published in 1870, which gives an overview of the sciences, but in which Pouchet ridicules Louis Pasteur's theories (calling them panspermism) and atomic theory.
In 1847, Pouchet effectively launched the study of the physiology of cytology. In 1848, he was elected as a member to the American Philosophical Society.

Jean-Félix Adolphe Gambart (12 May 1800 – 23 July 1836) was a French astronomer.He was born in Sète in Hérault department, the son of a sea captain. His intelligence was noticed at a young age by Alexis Bouvard, who persuaded him to join the astronomy profession. In 1819 he joined the Marseilles Observatory and became the director in 1822.
During his career he recorded a number of observations of the satellites of Jupiter, and discovered a total of 13 comets. In 1832 he observed the transit of Mercury across the Sun, noting that the planet appeared deformed as it approached the edge.
He suffered from tuberculosis, and in 1836 died from cholera in Paris, aged 36.
The crater Gambart on the moon is named after him. He was also awarded the medal of the London Astronomy Society for his calculation of a cometary orbit.

Jean Dollfus (September 25, 1800 – 21 May 1887) was a French industrialist who grew a textile company, Dollfus-Mieg et Compagnie (D.M.C.), in Mulhouse. Dollfus was a leading figure in a philanthropic society which constructed a company town that sold houses at cost to the town's workers. Dollfus also helped publish an encyclopedia of needlework.

Frédéric Soulié (23 December 1800 – 23 September 1847) was a French popular novelist and playwright. He wrote over forty sensation novels like Mémoires du diable (1837-8).

Antoine Louis Prosper "Frédérick" Lemaître (28 July 1800 – 26 January 1876) was a French actor and playwright, one of the most famous players on the celebrated Boulevard du Crime.

Eugène Louis Lami (12 January 1800 – 19 December 1890) was a French painter and lithographer. He was a painter of fashionable Paris during the period of the July Monarchy and the Second French Empire and also made history paintings and illustrations for books such as Gil Blas and Manon Lescaut.

Armand Carrel (8 May 1800 – 25 July 1836) was a French journalist and political writer.