The representation of women in the engineering profession (17.90%) far lags that of the Canadian workforce (47.50%), with several authors citing the need for professional and organizational culture change for engineering to be more equitable for and inclusive of women. Recent evidence reported that men actively working on gender equity practices is one mechanism through which this culture change will occur. The practice of allyship by men involves learning and reflecting, building trusting relationships with women colleagues, continuous action even through discomfort, and influencing change at multiple levels. We share our own experiences with starting a men's allyship group in an engineering workplace, initial successes, opportunities to improve, and our vision for the future.