The present research aims to identify the differences and similarities that may exist between the variables associated with the logistics management of business organizations based on their size. For this, a comparison was made between 992 companies in Ecuador, where four types of companies were represented: micro, small, medium and large, in proportion to the structure that the composition of the country’s companies presents. The results showed, by applying a hypothesis test to verify the equality of means, the existence of statistically significant differences in the levels of analysis in variables associated with administrative functions, supply processes, storage, production, distribution and reverse logistics. It was shown that the degree of development of logistics activity is very limited in micro and small companies. Therefore, the body of knowledge and methodological instruments available for business administration must be adapted with caution when applying them in the context of small organizations.