This final paper describes and researches the topic of guerrilla marketing and consists of eight chapters. The chapters include a theoretical part, a practical part with examples and part on scientific research. The theoretical part of the paper defines the basic terms of marketing as a scientific discipline and points out all the differences between traditional and guerrilla marketing. It also describes the history of the guerrilla, its basic terms, advantages and disadvantages, the principle and the guerrilla creativity which plays a significantly important role in the whole story. The practical part of the paper defines basic types of guerrilla marketing and gives examples of each type, leading to the conclusion that each type of guerrilla advertising has specific and interesting features. In the second practical part of the paper, the examples of guerrilla marketing in Croatia are given. There are many global and well-known examples in this area, but development of guerrilla in Croatia is still not at its peak. The last part of the paper analyses of scientific research. The research was conducted via an internet questionnaire. The aim was to determine to which extent the individuals are familiar with guerrilla marketing and which ads are more appealing and creative than others. The results of the questionnaire proved that the term guerrilla marketing is known among the half of the respondents.