Rita Lejeune (1906–2009) was a Belgian philologist who became a leading expert in the study of medieval French literature.

[3] After secondary school she became a student and then a researcher at the University of Liège, obtaining her doctorate in 1928 with a thesis on Jean Renart.

In the meantime she also studied at the École pratique des hautes études in Paris.

In 1937 she began teaching at Liège University, and in 1954 she was appointed full professor in the department of Romance philology there.

[1] She died in Liège on 18 March 2009,[3] and was buried in the churchyard of Notre-Dame de la Licourt in Herstal.