The paper provides an insight into the aspects of green marketing, and the characteristics of green consumers and explains the phenomenon of greenwashing. Green marketing represents the marketing of environmentally friendly products and services, and its essential characteristics are manifested in the connection of consumer needs with environmental protection while trying to create a green business image. Environmentally conscious consumers are also called green consumers, and they represent consumers who satisfy their wishes and demands with products or services with the least adverse environmental impact. These consumers are often willing to pay more for an environmentally friendly product and are changing their existing consumption habits to a more environmentally friendly one. Driven by such market demands, the phenomenon of greenwashing occurs. Greenwashing refers to the application of marketing activities that are contrary to green marketing and in the form of which companies groundlessly present themselves to consumers as environmentally acceptable, where the groundlessness is manifested in their emphasis on reducing the negative impact on the environment. At the same time, in practice, they do not apply it. The main goal of the paper was to investigate environmental awareness and attitudes towards greenwashing among Croatian consumers, which was examined by conducting empirical research. The research was conducted online and using the poll as the survey instrument, which was created using the Google Forms tool. Analysing the collected data, it was determined that a neutral to moderately high level of environmental awareness prevails among Croatian consumers and they show a negative attitude towards greenwashing. Furthermore, by testing the hypotheses, it was determined that among Croatian consumers there is a statistically significant relationship between environmental awareness and attitude towards greenwashing and between the level of education and attitude towards greenwashing.