This paper covers the South Caucasus policy of Turkey after the 44-Day War between Azerbaijan and Armenia in 2020. The aim of the research is to investigate the role of Turkey, which supported Azerbaijan politically and morally in the war, in the South Caucasus. This article concludes that, after this war, a new geopolitical situation has emerged in the South Caucasus region. In this new geopolitics, Turkish soldiers have been deployed, alongside those from Russia, in the Joint Monitoring Centre to observe the ceasefire in the Karabakh region of the Republic of Azerbaijan, and Turkey became a kind of guarantor of the liberated Azerbaijani territories through the Shusha Declaration signed between Turkey and Azerbaijan. Additionally, according to the trilateral statement of Azerbaijan, Armenia, and Russia that was signed on 11 January, it was decided to establish a new corridor that is planned to pass through Armenia to connect Turkey with Azerbaijan. Moreover, Turkey–Azerbaijan strategic relations have entered a new phase in terms of economic, military, and defence industry technologies. In short, after the 44-Day War, Turkey gained an advantageous position in the South Caucasus and Central Asia.