Zeyn ol Dini (, also Romanized as Zeyn ol Dënë, Zeyn ed Dënë, and Zeyn od Dënë; also known as Zainadoni, Zandà «në, Zeinoddin, Zen Dà «në, Zeyn Denë, and Zeyn od Dën) is a village in Kal Rural District, Eshkanan District, Lamerd County, Fars province, Iran. At the 2006 census, its population was 227, in 57 families.