The topic of this paper is idioms of emotion in English and Croatian. The English language is very rich in the use of idioms. Rosamund Moon (according to Strakšiene 2009:13) defines idiom as “an ambiguous term, used in conflicting ways, in lay or general use, idiom has two main meanings [...] First, idiom is a particular means of expressing something in language [...] which characterizes a person or group. Secondly (and much less commonly in English) an idiom is a particular lexical collocation or phrasal lexeme, peculiar to a language”. The word idiom is based on the meaning of the Greek word idioma (peculiar feature) (Fiedler 2007:16). According to Cherry (2015), human emotion can be defined as “a complex psychological state that involves three distinct components a subjective experience, a psychological response and behavioural or expensive response”. There is a large number of different emotional reactions followed by almost just as many corresponding different expressions which are often idioms. The main goal was to find idioms of emotion in English language and then to translate them, by using a correct method, to target language – Croatian. Most of idioms concerning emotions were found in Hrvatsko – engleski frazeološki rječnik (Bendow 2009) which was a primary source for analysis. I have found the Croatian equivalents (almost 50% of all the examples) in Hrvatski frazeološki rječnik (Menac, Fink-Arsovski, Venturin 2003). Just as it usually is when it comes to idioms we have to be very careful about their translation to a different language. Finally, I have selected 45 idioms using a typical classification which is usually used when idioms are translated – these are: full equivalence, partial equivalence and zero equivalence (Gläser 1984:124).