Public Significance Statement Canadian society has become much more diverse in recent decades, and has celebrated, but in some respects also been challenged by this diversity. Based on the experience and opinions of the author, this article presents a perspective on some of the ways in which Canadian psychology has responded to the issues related to diversity, and some of the potential areas for the ongoing development of the science and profession of psychology. In particular, the article recommends enhanced respect for diversity, recognition of the ubiquitous nature of intersectionality, the encouragement of social and restorative justice perspectives, and equitable participation of all persons in society. One of the ongoing challenges in Canadian society is its diversity. This article discusses some of the historical forces in Canada that have shaped discussions about diversity, with a focus on issues related to immigration, the experience of Indigenous communities in Canada, and other forms of human variability. The article presents some of the ways in which Canadian psychology has failed to maintain optimal diversity considerations and/or to uphold the ethical principle of respect for the dignity of persons, but it focuses on more positive aspects of this evolving relationship. For example, it is noted that psychology has contributed in several ways to our understanding of bias, discrimination, "othering" and related issues such as abuse of power. The article concludes with a series of recommendations for enhanced respect for diversity, recognition of the ubiquitous nature of intersectionality, the encouragement of social and restorative justice perspectives, and equitable participation of all persons in society.