The author investigated the relationship between gender diversity and organizational inclusion and moved forward to examine whether gender diversity, diversity management and organizational inclusion predict workplace happiness by collecting 320 questionnaires from academics in three public universities in Egypt. A t-test was used to identify how gender may affect perceptions of diversity management and organizational inclusion. Hierarchical regressions were applied to test whether gender diversity, diversity management, and organizational inclusion can predict workplace happiness. The findings showed no relationship between gender diversity and organizational inclusion, and the authors confirmed that gender diversity, diversity management, and organizational inclusion can effectively predict workplace happiness. Theoretical and empirical implications are discussed at the end of the paper.