Anglicisms in computer terminology is the main subject of this paper. The introductory part argues which types of linguistic borrowing exist and what the reasons of borrowing many different linguistic units from foreign languages are. The following topic is Anglicisms, their definition and the types of modification they undergo to be fully accepted in croatian language. The influence of computers and the Internet on croatian language is discussed in the elaboration (part) of the paper, which points what the purpose of this paper is. The purpose is to present the lack of croatian computer terms and also how settled anglicism is in computer terminology. Also, for certain terms only the english ones are used because their replacements have not been found in croatian language. The main determinants of the text declare substitution of english terms for croatian terms and some terms have been found to have multiple translations. The following part of this paper states general facts about croatian computer terminology and its rapid development throughout the years. The final part presents the classification of the mentioned terminology.