This dissertation seeks to examine the ways in which Twitter users debate Saudi Arabia's ban on women driving, with a broader objective of explicating how gender roles and relations are negotiated in that discursive space. In Saudi Arabia, a social media site such as Twitter offers Saudi women an alternative public space when there is no comparable open-media space in which they can communicate and raise their concerns, including their right to drive. To capture part of the ongoing discussion about women driving, a corpus of Arabic tweets that discuss the ban was compiled during October, November and December 2015. Informed by a corpus-assisted discourse studies approach, which combines the discourse-historical approach (Reisigl & Wodak, 2001) and corpus linguistics (Baker, 2006; 2010), I analyze the views and arguments expressed by Twitter users in debating the Saudi ban on women driving. I would like to sincerely thank Princess Noura University for the scholarship which afforded me the opportunity to pursue my research. Additionally, the generous support and services provided by The Saudi Arabian Cultural Bureau has been much appreciated throughout this process. For his unwavering support and guidance, I would like to express my gratitude to my supervisor Dr. Jaffer Sheyholislami. Without his help, advice and insightful comments, this work would not have been possible. Thank you to the advisory committee members who provided valuable feedback throughout the different stages of the research. A special thanks to Dr. Guillaume Gentil for being part of the research process at its all stages and for his invaluable comments to improve the study. Thank you also to Dr. Karim Karim and Dr. Lynne Young for their support at the earlier stages of the research, to Dr. Joshua Greenberg, the internal examiner, for his insightful suggestions and comments, and to Dr. Susan Ehrlich for her thorough examination and valuable feedback as the external examiner. I am also appreciative of Dr. Ellen Cray's instruction and encouragement which motivated me to undertake a PhD and who offered support during the application process. Thank you to my friends Maha Alkhudair, Lina Alhassan, Lisa Armstong and Katherine Eastwood for putting up with my stress and for providing me with constant support and motivation during the writing process. I owe my deepest gratitude to my father and mother for their unconditional love and constant encouragement to pursue my education, and to my sisters, brothers, nieces, nephews and family in-law for providing me with both the confidence and strength v necessary throughout this journey. Finally, I am deeply grateful to my husband whose tremendous patience, encouragement and emotional support have enabled me to thrive and succeed, and to my son who has been by my side through this journey and who brought joy and inspiration to my life.