E-government aims to deliver extensive and timely public services to citizens through the use of information and communication technologies in government such as e-participation. In particular, despite the growing importance of e-government in Saudi Arabia, no attention has been given to investigate the factors that may influence the adoption of e-participation. This study examines the factors influencing citizens’ intention to engage in e-participation on Saudi e-government websites. The study used responses obtained from Saudi citizens. The data of the survey were analysed using Partial Least Square (PLS) approach. The results indicated that the key factors SWAT (Subjective norm, Website design, Attitude, Trust) has a significant impact on citizens’ intention to engage in eparticipation.