Ymyyakhtakh (Russian: Ымыяхтах; Yakut: Ымыйахтаах, Imıyaxtaax) is a rural locality (a selo), the only inhabited locality, and the administrative center of Edeysky Rural Okrug of Namsky District in the Sakha Republic, Russia, located 36 kilometers (22 mi) from Namtsy, the administrative center of the district. Its population as of the 2010 Census was 1,219, of whom 617 were male and 602 female, up from 1,157 as recorded during the 2002 Census. Ymyakhtakh is what English-speakers would call a village.

The village is located within several hundred feet of the Lena river of Siberia, on its western bank. The location is also an archaeological site, associated with the same-named culture, known as the Ymyyakhtakh culture. This was a chalcolithic culture that had expanded northeastward from the Lake Baikal area in the late second-millennium BCE.

• Official website of the Sakha Republic. Registry of the Administrative-Territorial Divisions of the Sakha Republic. Namsky District. (in Russian)
• Государственное Собрание (Ил Тумэн) Республики Саха (Якутия). Закон №173-З №353-III от 30 ноября 2004 г. «Об установлении границ и о наделении статусом городского и сельского поселений муниципальных образований Республики Саха (Якутия)», в ред. Закона №1058-З №1007-IV от 25 апреля 2012 г. «О внесении изменений в Закон Республики Саха (Якутия) "Об установлении границ и о наделении статусом городского и сельского поселений муниципальных образований Республики Саха (Якутия)"». Вступил в силу со дня официального опубликования. Опубликован: "Якутия", №245, 31 декабря 2004 г. (State Assembly (Il Tumen) of the Sakha (Yakutia) Republic. Law #173-Z No. 353-III of November 30, 2004 On Establishing the Borders and on Granting the Urban and Rural Settlement Status to the Municipal Formations of the Sakha (Yakutia) Republic, as amended by the Law #1058-Z No. 1007-IV of April 25, 2012 On Amending the Law of the Sakha (Yakutia) Republic "On Establishing the Borders and on Granting the Urban and Rural Settlement Status to the Municipal Formations of the Sakha (Yakutia) Republic". Effective as of the day of the official publication.).