The past two decades have witnessed the relentless advancement of a body of knowledge focused on explaining aspects of firms' entrepreneurial internationalisation behaviour, including the actions of their key decision makers or management teams. This literature base has, in no small measure, benefited from research originating from the McGill International Entrepreneurship Conference Series, which marks its 20th anniversary in 2018. The cross disciplinary ethos of this nascent scholarly community is amply reflected in the wealth of international entrepreneurship (IE) studies that actively bridge the contiguous domains of international marketing, international management, international business and much else. The present Special Issue extends this admirable tradition by showcasing boundary spanning research that contributes to both theory and practice.