The research problem and the subject of research of this thesis includes the analysis of guerilla marketing activities, that is guerilla marketing campaigns of the Red Bull brand in the promotion of its own products. Red Bull is a world-famous brand that primarily deals with the sale of energy drinks. It is a brand that is famous for dynamic marketing, various sponsorships and organization of its own events. Guerilla marketing activities are, in short, marketing tactics that are used in unconventional ways, in order to attract the attention of the audience and to carry out a certain promotion as cheaply as possible and in order to achieve the diffusion of the message. In addition to the numerous types of guerilla marketing, there are three effects that guerilla marketing must satisfy. The three effects of guerilla marketing are the diffusion effect, the surprise effect and the low-costeffect. Guerilla marketing is a marketing direction that can achieve a huge reach and arouse great public interest, which Red Bull achieves with a series of different, unconventional guerilla marketing campaigns that promote the brand and all of its aspects. Using an anonymous survey questionnaire, the attitude of the Croatian audience on the success, impact and quality of Red Bull’s guerilla marketing campaigns was analysed. The surveyed Croatian audience generally likes the ideas of the selected marketing campaigns, but they believe that they do not have a significant impact on them as customers personally. They perceive the brand’s marketing activities successful and creative; they believe that they positively contribute and influence the brand’s business results and that they succeed in attracting new users.