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

Luchsingen is first mentioned in 1274 as Luchsingen.

In 2004 the former municipalities of Hätzingen and Diesbach were merged into the municipality of Luchsingen. On 1 January 2011, the enlarged municipality became part of the municipality of Glarus Süd.

Luchsingen is located in the valley of the Linth river, with the village located on the west bank of the river at an elevation of approximately 572 m (1,877 ft). Leuggelbach lies to the north, whilst Hätzingen lies across the river to the south.