The purpose of this study is to investigate the relationship between entrepreneurial orientation (EO) and firm growth and the moderating role of business environment for Russian and Finnish small- and medium-sized enterprises (SMEs). For hypothesis testing, structural equation modeling is applied to the data set of 104 Russian and 117 Finnish privately owned SMEs. Results show that while in the Finnish market context EO dimensions are directly associated with firm growth, in the emerging Russian market the relationship is moderated by the dynamic and hostile environment. The results also provide evidence of the nature of EO for SMEs operating in Russia.