This review paper details the current status of environmental impact assessment (EIA) legislation framework and procedures of implementation of EIA systems in the Gulf Cooperation Council States. The paper discusses the similarities and the different practice approaches of EIA studies between the States through assessment criteria of EIA systems. Performance evaluation criteria consisting of systematic and foundation measures are used for comparative assessment. This paper hence, seeks to develop a compilation on these EIA systems with regard to its legislation, practices and performance in the respective countries. A set of recommendations on how such practices can be enhanced and improved is presented.