The operating activities of the petroleum sector require large amounts of money and high levels of experience and technology that cannot be provided exclusively by most oil-producing countries or their public companies. Therefore, concluding a petroleum exploration and production contract is necessary to address the rights and obligations of the host State and international oil companies; while, various types of petroleum contracts have been developed to address those rights and obligations. In the Kurdistan Region, as an oil-producing region, oil and gas resources are being explored and produced by international oil companies, under production sharing contracts. This study attempts to appraise traditional and modern types of petroleum exploration and production contracts in detail, to examine the fundamental differences and similarities between them; and also to analyse the Kurdistan Region’s production sharing contracts. This research has clarified that the traditional contracts of different types of petroleum contracts are quite different, however, the modern contracts have many provisions in common. Therefore, currently, the choice of contract type might be less important than the content of particular contractual provisions. Finally, the research has clarified that the Kurdistan Region’s production sharing contracts comprise several positive provisions that have attracted a wide range of international oil companies to invest in the Kurdistan Region. Keywords : The Kurdistan Region of Iraq, The Kurdistan Regional Government, Production Sharing Contract, Concession Contract, Service Contract, Joint Venture Contract, International Oil Company, Traditional and Modern Petroleum Contracts. DOI: 10.7176/JLPG/101-17 Publication date: September 30 th 2020