The aim of this master’s thesis is to analyze slang in Australian English found in the novel ‘Puberty Blues’, by K. Lette and G. Carey. The main focus of the analysis was to determine the extent to which American and British English influence Australian English slang. For the purpose of the research, slang terms and expressions were extracted from the novel ‘Puberty Blues’ and then found in various dictionaries and defined. The research has shown that British English has a greater impact on Australian slang than American English, but also that Australian people are more inclined towards employing their own slang than the British or American one. Additionally, it is confirmed that nouns are the most frequent word class among the analyzed slang expressions, and that the semantic fields that deal with alcohol, drugs, school, etc. are more frequently covered. What is more, the research confirmed that young speakers employ specific language forms that include changes of spelling/pronunciation of standard words and characterize their age group. However, when it comes to one of the most productive ways of forming Australian slang – hypocoristics, there was only one example found in the corpus.