If diversity is the inclusion of the other and equity is equal opportunity, then diversity equity is equal opportunity for the inclusion of the other. In order to support and advance competitiveness -that is, inclusive excellence- many in the chemistry community have been working to advance diversity equity through deliberate engagement with chemistry department chairs and heads since 2006. This book provides a recap of the last four biennial National Diversity Equity Workshops (NDEWs). The Open Chemistry Collaborative in Diversity Equity (OXIDE) hosted and facilitated these workshops in 2011, 2013, 2015, and 2017. OXIDE convened leading social and behavioral scientists, diversity experts, and chemistry leaders to contextualize the challenges for achieving diversity equity, and to develop strategies to advance diversity and inclusion across all underrepresented groups in chemistry -e.g., for women, under-represented minorities, gender identity and orientation, and disability status.