Leimbach () is a commune in the Haut-Rhin department in Grand Est in north-eastern France.
Leimbach was historically attested as Leymbach in 1223. The toponym Leimbach is of Germanic origin, cognate to modern German , denoting clay. The Germanic hydronym ' entered the French language via High German, and took on two forms: the Germanic form -bach and Romantic -bais.