This thesis is about the semantic analysis of English loan word in Russian language. Thesis focuses on the area of informatics. The first part of the thesis is theoretical, in which we talk about loan words, especially those from English language. The second part of the thesis is the analysis. It analyses English loan word from the magazine Linux Format, number 7 from 2016. The analysis is based on the works of Rudolf Filipović. He makes a distinction between primary and secondary adaptation of loan words. Primary adaptation includes zero semantic extension, narrowing of the meaning in the number and in the semantic field. Secondary adaptation includes extension of the meaning in the number and in the field. Most of the examples are included in the zero semantic extension. That means that during their adaptation to Russian language, there was no change concerning their meaning. This thesis also analyses sematic changes concerning ellipsis, metonymy and pejoration. The reason why languages borrow words from each other is to fill the gaps in vocabulary. Lot of new inventions and discoveries come from English spoken areas, so it is no wonder a lot of loan words come from English language. Good example for that is the area of informatics, which was analyzed in this thesis. Words are not borrowed from English language just to fill the gaps; words from English language are part of the pop culture, different trends. English words sound more modern, interesting, so they are often used instead of native words. These words are especially used by the media and the younger population.