Louis Tronnier (21 November 1897 – 27 January 1952) was a general in the Wehrmacht of Nazi Germany during World War II.

He was a recipient of the Knight's Cross of the Iron Cross.

Tronnier surrendered to the Red Army forces during the second Soviet Jassy–Kishinev Offensive in August 1944.

He died on 27 January 1952 at Voikovo officers' prison camp near Ivanovo.