In order to define the application of mobile marketing in banking, it is necessary to get acquainted with the way banking and banking system function. The acceleration of technological development and the increased availability of information raise public awareness, therefore banks try to keep pace and make bigger effort to adapt to their client's needs. On the one hand, the application of mobile marketing in banking sector greatly improved banks' business and increased their profits, whereas, on the other hand, it provided customers with new services and opportunities that follow technological development and greatly facilitate the application of banking services and products. Modern technologies and the fast pace of modern life, both private and business, require banks to adapt to the needs of their clients. The development of various applications and faster Internet, improve the level and speed of services that banks offer through applications. Also, with the increasing speed of service and easier access to new products, the profit of banks increases and customer feedback is easier to reach, which affects further development and application of new products and services. The application of mobile marketing differs from bank to bank. Mobile marketing has been present for years in two largest Croatian banks, Zagrebačka banka and Privredna banka Zagreb. We can consider these two as the forerunners of mobile marketing. For the purpose of this graduate paper, I did a face-to-face interview with a member of the marketing department of Zagrebačka banka.