This document deals with the topic of copyright protection on the Internet in the Republic of Croatia. We have witnessed how in the past few decades the development of the Internet and modern technology has changed life, thus influencing various legal regulations. Copyright is a branch of law that seeks to protect one's work and originality, as well as one's author's works. The territorial validity of copyright directly faces new problems and challenges in the digital world. Copyright protection on the Internet itself is in its infancy, taking into account the complexity and slowness of all political processes. The Republic of Croatia follows the legal practice of the European Union, and has included in its law on copyright and related rights articles related to the protection of copyright on the Internet. It is very difficult to control whether copyright is being violated on the Internet due to the unlimited amount of data and materials available on it. This area of law will certainly be the source of many interesting and many open legal questions in the future, and the legislator will find new ways and frameworks to protect the author of the work from misuse of the work he created.