Based on a 20‐year dataset collected from the Web of Science database, this study aims to present a comprehensive knowledge map of the intellectual structure of the field of study of sustainability and financial performances in small and medium sized enterprises (SMEs). A bibliometric analysis and a systematic literature review method were employed by analyzing articles published between 1999 and 2018, using the VOSViewer software. The study provides an overview of articles, authors, the most influential journals, and themes of research. The results reveal the existence of three themes in research: the role of innovation and entrepreneurship and their impact on sustainability in SMEs (cluster 1), corporate social responsibility in the context of SMEs (cluster 2), and green management and environmental issues for SMEs (cluster 3). In sum, this paper discusses prominent insights from the research analyses and recommends future research directions for the field.