Leuggelbach is a village, and former municipality, in the municipality of Glarus Süd and Canton of Glarus in Switzerland .

Leuggelbach is first mentioned in 1350 as Löckelbach.

Several factories opened in the 19th century, including a calico factory that closed in 1930 and a textile finishing factory that closed in 1993. Today all that remains is a paint and varnish factory, along with some craft enterprises.

On 1 July 2006 the municipality of Leuggelbach was merged into the municipality of Haslen. On 1 January 2011, the municipality of Haslen was itself merged into the new municipality of Glarus Süd.