The purpose of this research was to explore the role of masculinity and heterosexual gender relations in new and expectant fathers’ explanations of their continued smoking. We conducted a secondary analysis of in-depth interviews with 20 fathers. Two themes were identified (1) reconciling with partners to maintain a smoke-free family home; and (2) smoking to self-regulate emotions and maintain relationships. Fathers’ decisions to smoke and changes in smoking behavior were shaped by ideals of masculinity and by partner relationships and family and social contexts, including division of domestic duties and childcare. Recognizing the influence of both masculinity and gender relations could provide new directions for supporting men’s smoking cessation efforts during early parenthood.