Lothar Buchmann (15 August 1936 – 21 November 2023) was a German football player and coach.

As a player, he played for Mainz 05 and Eintracht Bad Kreuznach in the first-tiered Oberliga Südwest, where he appeared in 191 matches, scoring 49 goals between 1955 and 1963.

After the introduction of the Bundesliga in the 1963–64 season, he joined the second division Regionalliga Südwest and Süd clubs Wormatia Worms and VfR Bürstadt.

In the Bundesliga, he managed Darmstadt 98, VfB Stuttgart, Eintracht Frankfurt, Kickers Offenbach, and Karlsruher SC between 1978 and 1985.

At the helm of Eintracht Frankfurt, Buchmann won the DFB-Pokal in 1981.