Pierre Oster (6 March 1933 – 22 October 2020) was a French poet and editor born into a Luxembourgish family.
His first poem, Premier poème, was published by Mercure de France in 1954 thanks to support from Pierre Jean Jouve.
Quatre Quatrains gnomiques was published in La Nouvelle Revure française thanks to Marcel Arland and Jean Paulhan.
In 1961, Jean Paulhan helped set up a meeting between Oster and Saint-John Perse, who gave him great poetic motivation.
He worked with Claude Tchou, who helped Oster cover Pascal Pia and the Bibliothèque nationale de France.