Environmental Impact Assessment (EIA) is a planning tool to identify, predict and evaluate potential environmental impacts and mitigation measures in the early stages of proposed projects. Although EIA has been implemented in Malaysia for over 25 years, the EIA practices have yet to achieve the parameters of effective environmental management and sustainable development. Hence, this research aims to improve the EIA process in Malaysia. Three objectives were utilised in this research which are to recognise the fundamentals of EIA process and procedures applied in Malaysia, to analyse the issues in relation to the EIA preparation and submission conducted in Malaysia and to propose a set of recommendations to further improve the current EIA process in Malaysia. Mixed methods approach was embarked composed of qualitative instruments via document review and semi-structured interviews and quantitative instrument utilising questionnaire survey. Key issues on the EIA process in Malaysia were gathered from qualitative data collected. Analysis of data collected resulted to recommendations on the key issues regarding EIA. 25 proposed recommendations to improve the EIA process were contextualised and validated via questionnaire survey. Ergo, this research established an improved EIA process in Malaysia towards sustainable development to ameliorate the EIA practices in Malaysia.