This article relies too much on references to primary sources. (August 2010) (Learn how and when to remove this template message)
The Gladden Fields (Loeg Ningloron in the invented language Sindarin) is a location in J. R. R. Tolkien's fictitious Middle-earth. In this fantasy world, the Gladden Fields are marshlands located in the Middle-earth region of Wilderland, in particular where the Gladden river joins the Anduin. The name "gladden" refers to the yellow iris or flag, Iris pseudacorus 
|J. R. R. Tolkien's legendarium location|
The yellow Iris, Iris pseudacorus, was the flower which Tolkien referred to as 'gladden'
|Type||Marshland of reeds and Iris|
|Other name(s)||Loeg Ningloron|
|Location||At the mouth of the Gladden River and the banks of the Anduin|
In the year T.A. 2, Isildur, the new High King of Arnor and Gondor, was marching close to the north-east Gladden Fields with his three eldest sons (Ciryon, Aratan and Elendur) and a company of 200 soldiers. They were ambushed by Orcs, and when the battle was lost Isildur attempted to escape by jumping into the Anduin, using the power of invisibility of the One Ring. However the Ring slipped from Isildur's finger and sank to the bottom of the river. Isildur landed on the other bank of the river where he was killed by Orcs looking for survivors of the ambush. Isildur's squire Ohtar saved the shards of Narsil from the enemy horde; Isildur's sons and virtually the entire company were killed during the battle. This incident would become known as the Disaster of the Gladden Fields.
- "Flora of Middle Earth:Plants of J.R.R. Tolkien's Legendarium; Walter S. Judd & Graham A. Judd". Oxford University Press. Retrieved 27 November 2018.
- Tolkien, J. R. R. (1980), Christopher Tolkien (ed.), Unfinished Tales, Boston: Houghton Mifflin, "Disaster of the Gladden Fields", ISBN 0-395-29917-9
- Carpenter, Humphrey, ed. (1981), The Letters of J. R. R. Tolkien, Boston: Houghton Mifflin, #214, ISBN 0-395-31555-7