谢德尼夫是乌克兰的城镇，位于该国西南部切尔诺夫策州，处于斯诺夫河畔，始建于1068年，面积3.86平方公里，2011年人口1,175，人口密度每平方公里304.4人。

Sedniv is a small urban-type settlement in Chernihiv Oblast, Ukraine. It is located in the Chernihiv Raion. Population: 1,175(2011 est.).

Sedniv is famous for being a home town of Cossack's Lyzohub family. Population of Sedniv suffered from Holodomor and in 1932 it lost its status of town (Blackboards (Soviet policies)). In 1932-1959 Sedniv was a village.