Using firm-level data of manufacturing sector during the period 1989-2010, this thesis explored the export behavior of firms in Turkey. Up to date, Turkey’s export performance has been analyzed from macro perspective extensively. However, far too little attention has been paid to firm-level analysis contrary to ongoing and growing empirical literature . The preliminary analysis revealed the superiority of exporting firms. Both self-selection and learning-by-exporting are found to be valid explanation for the source of this observed export premium. Dynamic discrete choice model results provide supportive evidences for the existence of sunk-costs. Besides, it is observed that sunk-costs varied during the crises. Sunk-costs not only shape export decision but also affect timing decision. The exit and entry dynamics of the firms has been studied using duration analysis. Results showed self-selection of less profitable firms into export markets and importance of non-price competition for the survival of exporters. Impact of crises on export behavior has been examined by regarding extensive and intensive margins of exports separately. The findings implied v that for 1994 crisis increase in extensive margins, for the case of 2001 crisis increase in intensive margin and for 2008 crisis decline both in extensive and intensive margins of exports dominated. This thesis makes several noteworthy contributions to the existing literature. First, it contributed to the ongoing and growing empirical literature using Turkish data. Secondly, unlike, existing studies that investigate single feature of the export behavior, in this thesis, using different approaches the issue has been analyzed extensively. Moreover, using advantage of the data set and Turkish economy, the impact of different types of crisis on export behavior has been analyzed and contributed to the literature that studies the impact of shocks on export behavior.