埃尔德旺（法语：Erdeven）是法国莫尔比昂省的一个市镇，属于洛里安区（Lorient）贝尔县（Belz）。该市镇总面积30.64平方公里，2009年时的人口为3402人。

埃尔德旺人口变化图示

Erdeven (An Ardeven in Breton) is a commune in the Morbihan department in the region of Brittany in north-western France.

Its main industry is tourism. Attractions include a seven kilometre-long beach beside the Atlantic and many prehistoric sites featuring megaliths. The Mané-Croch, Mané-Bras and Crucuno dolmens and the Kerzerho alignments lie just outside the commune.