Öz Due to increasing demand, gas supply is one of the most strategic energy security issues for huge importers. Caspian region -where important gas supply potentials exist- has always been directly related to the huge importers' energy security issues, such as EU and Turkey.Azerbaijan as an important gas supplier country located in the Western Caspian Region, and her future gas supplies become more important for the importers mentioned above. Consequently, these importers are forming alliances together with long term plans and developing new projects to import the gas resources from Azerbaijan. As a result of this alliance, politically named as “Southern Gas Corridor, SGC” continues to be developed. In the concept of SGC, transportation of the Azerbaijan gas resources to TR & EU, SCPX-TANAP-TAP and related infrastructures are decided to be constructed. In this paper, after focusing on the Azerbaijan gas supply potential and gas market, the importance of this potential for European and Turkish energy markets will be described by underpinning the annual demand values. Since Southern Gas Corridor is a long term target, 2050 Azerbaijan gas supply and export potential (in huge gas projects base), including the infrastructural limitations, will be estimated.