Antoine Louis Camille Lemonnier (French pronunciation: [ɑ̃twan lwi kamij ləmɔnje]; 24 March 1844 – 13 June 1913) was a Belgian writer, poet and journalist.

The rejection of Un Mâle by the judges for the quinquennial prize of literature in 1883 made Lemonnier the centre of a school, inaugurated at a banquet given in his honour on 27 May 1883.

[1] He turned aside from local subjects for some time to produce a series of psychological novels, books of art criticism, etc., of considerable value, but assimilating more closely to French contemporary literature.

The most striking of his later novels include Happe-chair (1886), often compared with Zola's Germinal, L'Arche, journal d'une maman (1894) and Le Vent dans les moulins (1901), which returns to Flemish subjects.

In Adam et Eve (1899) and Au Cœur frais de la forêt (1900), he preached the return to nature as the salvation not only of the individual but of the community.

He began to write at a time when Belgian letters lacked style; and with much toil, and some initial extravagances, he created a medium for the expression of his ideas.