Keywords: Political Instability, Corruption, Economic Growth, Political Conflict1.IntroductionThe major aim of this paper is to examine the empirical relations between economic growth and a broad group of political instability factors including corruption, government instability, internal and external conflicts, religious and ethnic tensions, democratic accountability and bureaucracy quality. Moreover, one of the main objectives of our paper is to explore the effects of serious problems such as political instability and corruption on economic growth for Organisation for Economic Co-operation and Development (OECD) countries during the period 1984-2012. Thus, most of the countries in our sample are developed countries of the world.The main contribution and distinctive characteristic of this article is to focus not only on the relationship between political stability and economic growth, but also on the relations between some specific categories of political instability and economic growth. It is generally accepted that corruption is an element of political instability as well. In this paper, we employ system GMM estimator for linear dynamic panel data models in order to overcome a potential endogeneity problem.The relationship between political instability and economic growth has been an issue of concern for long. Political instability is one of the conventional themes of the modern political economy theory. Modern theory of political economy suggests that political stability plays a significant role in economic growth of a country. Thus, an unstable political system could seriously hinder economic growth. Within the theoretical framework of modern political economy, a government is considered to be inefficient if policy objectives vary over a short period of time. Thus, coalition governments are a serious threat and to be more prone to the political stability. Moreover, modern political economy theory emphasizes that political instability also affects the level of economic growth in the country as the rates of economic growth are correlated with persistent policies of government and how government perform these policies (Barro, 2013).On the other hand, corruption is a widespread phenomenon in several countries around the world, which are regarded by economists as seriously harmful to economic growth (Aisen & Veiga, 2011). The majority of academic research reveals that corruption impedes economic growth, creates political instability, weakens the state's capacity to tax, undermines spending programs, increases the cost and lowers the quality of public investment (IMF, 2016). Some economists consider that corruption can also have distributional consequences. Corruption increases income inequality and poverty through lower economic growth, biased tax systems favoring the rich, and lower social spending (Gupta, Davoodi & Alonso-Terme, 2002). However, some researchers suggest that the impact of corruption on economic growth is related with factors such as the country's legal and institutional framework, quality of governance and political regime. Thus, in some highly regulated countries, corruption can compensate for red tape and institutional weaknesses and overcome the government failure in the economy (Campos, Dimova & Saleh, 2010). Since there is a large consensus that corruption hinders economic growth and increases socio-economic inequalities, international organizations such as the World Bank and OECD emphasize that corruption is among the greatest obstacles to economic and social development (OECD, 2013).The remaining part of this paper is organized as follows. Section 2 presents a brief literature review. Section 3 provides information about the data, empirical model, and empirical methodology. Section 4 contains empirical results. Section 5 includes a summary and concluding remarks.2.Brief Literature ReviewAlesina, Ozler, Roubini, & Swagel (1992) define political instability narrowly as the tendency of the change in cabinet either by constitutional or unconstitutional means. …