In the following, hydrogen filling stations are divided into several categories. This categorisation is intended to help the reader to understand the hydrogen filling stations and to summarise the main advantages and disadvantages of each solution. When selecting the type of a particular hydrogen filling station, the economic, technical and safety possibilities and the specific intended use for the filling station are crucial. After considering all these aspects, a study is carried out and the most suitable filling station design is selected. Here, hydrogen filling stations are classified according to the type of hydrogen used, the location of the station, the type of vehicles for which the station is intended and the source of the hydrogen distributed in the filling station.