The final paper on the topic "Administrative function of the police" contains 6 chapters on the 36 pages. Each chapter talks about the role of the Croatian police in the submission of requests, the process of obtaining and the process of rejection, be it ID cards, driver's licenses, weapons licenses. Croatian citizenship stands above all that. Croatian citizenship serves as proof of belonging to the Croatian nation for the majority of Croatian citizens. The most common way to obtain Croatian citizenship is by birth on the territory of the Republic of Croatia. A foreign citizen can also apply for Croatian citizenship on the basis of residence in the Republic of Croatia, birth, marriage, emigration, belonging to the Croatian nation. Upon receiving Croatian citizenship, a person receives a citizenship certificate, which is proof of Croatian citizenship. In addition to the citizenship certificate, proof of Croatian citizenship is also an identity card. An identity card is issued at the police station/administration according to the place of residence. A passport, like an identity card, is a travel document that proves citizenship. Residence is a permanent place of life, while a person can stay in a certain place permanently or temporarily outside the place of residence. Upon reaching the age of 18, a person can apply for a driver's license at the police station/administration according to the place of residence after successfully passing the driving test. The last chapter in the work is about firearms, who can submit a request for firearm and what conditions a person must meet in order to get approval for the acquisition of firearm.