Riedern is a former municipality in the canton of Glarus in Switzerland.

Effective from 1 January 2011, Riedern is part of the municipality of Glarus.

Of the rest of the land, 13.2% is settled (buildings or roads) and the remainder (9.3%) is non-productive (rivers, glaciers or mountains).

Most of the population (as of 2000[update]) speaks German (82.3%), with Italian being second most common ( 8.4%) and Turkish being third ( 4.5%).

[2] In the 2007 federal election the most popular party was the SPS which received 49% of the vote.