Acknowledgements.- Statement of Authorship.- Chapter 1 Introduction to Gender Diversity in Engineering.- Chapter 2 Experience of High School Students and Engineering Student Recruitment.- Chapter 3 Gender Differences in Undergraduate Engineering.- Chapter 4 Multi-Campus Exploration of Gender Differences in Undergraduate Engineering.- Chapter 5 Gender Differences in Graduate Student Experiences.- Chapter 6 Industry Member and Academic Engineering Experiences.- Chapter 7 Recommendations Towards Gender Diversity in Engineering.- Appendix A Survey Questions from Pilot Undergraduate Survey.- Appendix B Survey Questions from Undergraduate Survey Expansion.- Appendix C Graduate Student Survey Questions.- Appendix D Industry and Academic Survey Questions.