Louis Renault (21 May 1843 – 8 February 1918) was a French jurist and educator, and the co-winner in 1907 (with Ernesto Teodoro Moneta) of the Nobel Peace Prize.

From 1868 to 1873, Renault was professor of Roman and commercial law at the University of Dijon.

From 1873 until his death, he was professor in the faculty of law at the Paris Institute of Political Studies (Sciences Po) and the University of Paris, where in 1881 he became professor of international law.

Among his writings are articles and monographs on the specialized topics of international law.

In 1879, Renault published his Introduction to the Study of International Law and in 1917 First Violations of International Law by Germany, concerning the invasion of Belgium and of Luxembourg in breach of Germany's treaty obligations.