Liquidity as a field of study has received considerable attention from various researchers over the last few years. We have conducted this research in order to identify the factors affecting the liquidity of the banking system of nine Balkan countries, specifically Albania, Bosnia and Herzegovina, Bulgaria, Croatia, Kosovo, Macedonia, Montenegro, Romania and Serbia for a period of sixteen years. We collected data on factors such as capital adequacy, non-performing loans, deposit growth and bank profitability and analysed them using the following statistical techniques: a linear regression model using Pooled Ordinary Least Squares (OLS), a Fixed Effects Model, a Random Effects Model and a Hausman-Taylor regression to account for potential e...