This article focuses on the perception of the importance of business ethics among Czech and Slovak entrepreneurs (this includes business owners and managers) within the SME sector. The comparison is based on an analysis of the approach to business ethics according to a set of parameters, namely company size, years in business, and the gender and education of the entrepreneurs. Empirical research was conducted in 2020 on a sample set consisting of 454 respondents in the Czech Republic and 368 respondents (...) in Slovakia. The most important outcome of the research was the finding that business ethics is considered extremely important in both countries. The research results not only revealed that just over 90% of Czech entrepreneurs and 88% of Slovak entrepreneurs within the SME sector agreed that they should take into account the moral and ethical consequences of their decisions, but that the structure of their answers was very similar. Also, of interest were the findings that women were more aware of business ethics than their male counterparts, as were those entrepreneurs who possessed a higher education over those with a secondary education. (shrink)