Resource and knowledge sharing is key for innovative projects and achieving competitive advantage by small and medium-sized enterprises. Organizational innovations are an essential source of improvement for SMEs. They mean changes in: workplace organization, organizational structures and relations with the external environment. In this context, organizational innovations in external relations play a key role. In this article, the focus is on the application of organizational innovations. The goal is to show the importance of this type of innovations for small and medium-sized enterprises. The article starts with the definition of innovation, especially organizational innovation. Further follows an analysis of the results of research on organizational innovations in SMEs accompanied by the author’s own study focused on the Leszno subregion. This analysis allowed for formulating conclusions on organizational innovations for SMEs.