Louis Abel-Truchet (29 December 1857 – 9 September 1918) was a French painter and poster artist.

During World War I, he served as a volunteer with the rank of Lieutenant in the 1er régiment du génie [fr] (Engineering).

The army made use of his skills as a painter by appointing him as an assistant to Guirand de Scevola, head of the newly created Camouflage Division.

During this time, he continued to work as an artist, drawing caricatures for Le Petit Journal.

In 1919, his works were part of an exhibit at the Salon d'Automne, honoring artists who had died in the war.