Louis Poterat (2 January 1901 – 6 January 1982) was a French lyricist born in Troyes, Aube, France. Initially studying law, Poterat transitioned into journalism before finding his calling in songwriting, particularly in adapting foreign-language works into French. He gained prominence by writing lyrics for local revues and eventually joined the film company Pathé-Marconi, where he composed several film scores.

Poterat's career took off in the late 1930s with successful adaptations of foreign songs. In 1938, he penned the lyrics for "J'attendrai," set to music by Italian composer Dino Olivieri, which became a hit for Rina Ketty. The following year, he wrote "Sur les quais du vieux Paris" with music by Ralph Erwin, marking the first major success for singer Lucienne Delyle.

During World War II, Poterat's work, including "Valse des regrets" adapted from Johannes Brahms's waltz, resonated deeply with audiences. In the late 1940s, he frequently collaborated with composer Henri Bourtayre, notably on the operetta 'Miss Cow-Boy.'

Poterat's lyrics also featured in films, such as the 1936 adaptation of "La Garçonne," where his words were sung by Édith Piaf. He was married to Suzanne Mouilliey from 1922 until her death in 1980, and they had a son, Jacques Poterat. Louis Poterat passed away in Geneva, Switzerland, in 1982.