Since environmental pollution harms not only humans but all other living organisms on Earth, and is also a long-lasting and often irreversible adverse impact on the well-being of the environment, various ways have developed with which to try to reduce pollution partially and completely. One of these ways is Green Entrepreneurship. This paper initially describes what exactly entrepreneurship is, and then what are these types of entrepreneurship. One of them is green entrepreneurship, which is also the main topic of this work. The paper describes what exactly green entrepreneurship is, how it works, which are the authorities that regulate it, and how it is marked that a particular product is produced on the basis of the norms of green entrepreneurship. In addition, it will give examples in the Republic of Croatia in order to bring the topic even closer and thus raise awareness of the importance of this relatively young branch of entrepreneurship. The concept of green entrepreneurship is still not such a popularized concept in society, although it has all the predispositions to successful implementation, and to prove that even this form of entrepreneurship can achieve enviable economic results without compromising the ecological balance. For this reason, the inclusion of an increasing number of SMEs in forms of green entrepreneurship is crucial not only for them but also for the sustainability of the Earth.