A new consensus in macroeconomics called the New Neo-Classical Synthesis or New Keynesian Macroeconomic Model emerged at the end of the 1990s. The main characteristics of this consensus are formed by the synthesis of the New Classical, Real Business Cycle and New Keynesian approaches. Although The New Keynesian Macroeconomic Model is based on a general equilibrium model, it can typically be reduced to a three-equation system, consisting of an aggregate supply equation (Phillips curve), an aggregate demand equation (IS equation) and a monetary policy rule. The basic model assumes a closed economy However for a small open economy, such as Turkey, whose growth is largely affected by international capital flows, the ability of the standard New Neo-Classical Synthesis model to fully take into account economic dynamics is limited. In this paper we attempt to extend the New Neo-Classical Synthesis model to a small open economy case by adding equations that would capture the exchange rate movements and the current account dynamics. Results indicate that the open economy New Neo-Classical Synthesis model for Turkey can provide a framework to capture the dynamics of the Turkish economy for the post financial liberalization era and explain the behavior of the Central Bank of the Republic of Turkey.