Novopskov (Ukrainian and Russian: Новопсков) is a rural settlement in the Starobilsk Raion of Luhansk Oblast in Ukraine.

It is located on the Aidar, a left tributary of the Donets, in the basin of the Don.

Population: 9,392 (2022 estimate)[1] Prior to 2020, it was the administrative centre of the former Novopskov Raion.

On 19 September 2024, the Verkhovna Rada voted to rename Novopskov to Aidar as a part of the derussification campaign.

To the south, it extends to Kondrashivska Nova, in Stanytsia Luhanska, and to the north it crosses the border to Russia, and further runs to Valuyki, Belgorod Oblast.