The blockade of Nagorno-Karabakh was an event in the Nagorno-Karabakh conflict. The region was disputed between Azerbaijan and the breakaway Republic of Artsakh, internationally recognised as part of Azerbaijan, which had an ethnic Armenian population and was supported by neighbouring Armenia, until the dissolution of the Republic of Artsakh on 28 September 2023.
On 12 December 2022, under the guise of environmental protests, the Azerbaijani government launched a blockade of the Republic of Artsakh by sending citizens claiming to be eco-activists to block the Lachin corridor, a humanitarian corridor which connected Artsakh to Armenia and the outside world. Disguised military personnel, civil servants, members of pro-government NGOs, and youth organisations were among the so-called activists. The Azerbaijani government consolidated its blockade by seizing territory around the Lachin corridor both within Artsakh and Armenia, blocking alternative bypass routes, and installing military checkpoints. Azerbaijan also sabotaged critical civilian infrastructure of Artsakh, crippling access to gas, electricity, and internet access.