The purpose of the paper is to explore the relationships between geographical and virtual proximity in cluster organisations (COs). The authors report the findings from a qualitative study conducted in four COs in Poland. The basic technique for collecting and analysing data was an in-depth individual interview and qualitative content analysis. The research has shown that the relationships between geographical and virtual proximity depend on the cooperation level and the role of the CO. The findings presents a broader view on cluster cooperation as a phenomenon based on geographical proximity which facilitates personal interactions, but needs to be supported by various ICT tools.