Bachelor Thesis a Advertising on the Internet deals with internet advertising. In the theoretical part of the thesis there are briefly described terms that serve for better understanding of advertising, internet marketing and I characterize advertising on social networks. In the second part of the bachelor thesis are described the objectives and methodology of work, I analyze and in the form of questionnaires find out the main aim of the bachelor thesis. The main aim of this bachelor thesis is to find out whether advertising on the internet has a sense for the company and which type of advertising on the internet is suitable for the Slovak company to attract its potential customers. The conclusion of the work includes evaluation of questionnaires, submits suggestions and recommendations for improving the effectiveness of advertising on the Internet.