赫瑞德玛，Hreidmar，Hreiðmarr。北欧神话中的一名侏儒，他有三个儿子：法夫纳（Fafnir）、欧特（Otr）、雷金（Regin）。

他的二儿子欧特化身为水獭在水中捕鱼时，被经过的洛基（Loki）杀掉，不知情的洛基还带着奥丁（Odin）和海尼尔（Honir）来到赫瑞德玛的家，希望他帮忙烹煮猎到的水獭。看到儿子尸体的父亲自然怒不可遏，赫瑞德玛施展法术困住奥丁和海尼尔，要求洛基必须光脚去寻找可以盖住水獭皮的财宝做为赔偿，这是一个困难的要求，因为欧特的水獭皮可以无限延伸。

洛基借助海神之妻澜（Ran）的力量，找到了一名住在水中的侏儒安德瓦利（Andvari），这个安德瓦利拥有全侏儒中最庞大的宝藏，洛基毫不留情的强夺走了他的财宝，其中包拓一只戒指：安德华拉诺特（Andvarinaut）。安德瓦利悲愤之余，诅咒持有戒指者都将受无限的灾祸。

In Norse mythology, Hreiðmarr (anglicized as Hreidmar) is the king of the Dwarves. He is featured in the Völsunga saga in Snorri Sturluson's Prose Edda.

Hreiðmarr was the father of Fafnir, Ótr, Lyngheiðr, Lofnheiðr and Regin. He owned a house of glittering gold and flashing gems built by Regin and guarded by Fafnir. After Otr was accidentally killed by Loki, the Æsir repaid Hreiðmarr with Andvari's gold and the cursed ring Andvaranaut, a magical ring that can make gold. Fafnir and Regin later killed Hreiðmarr for the magical ring. Fafnir decided he wanted Andvaranaut for himself, so he turned into a dragon and drove Regin away. Fafnir guards the treasure until Sigurd arrives and delivers a fatal blow to the dragon.