Ion Andreescu (Romanian pronunciation: [i?on andre?esku]) was a Romanian painter of great renown, considered of the founders of modern Romanian painting.
He was born in Bucharest into a merchant's family. In 1869 he entered Theodor Aman's Fine Arts School.
By 1872 he was an instructor of drawing and calligraphy at the Bishop's School in Buz?u. In 1873 he left the Bishop's School for the Tudor Vladimirescu Communal Secondary School, also in Buz?u. Then, in 1875 he left the Communal Secondary School for Buz?u's Craftsmanship School.
Influenced by Nicolae Grigorescu, he left Romania for Paris to further his education. In Paris, he began painting at Barbizon. His work was exhibited with the works of better known painters such as Manet, Monet and Renoir.
In 1881 he returned to Romania, ill with tuberculosis. His death followed shortly in 1882.