The present thesis is concerned primarily with bilingual lexicography and English- Hungarian bilingual dictionaries. First of all, the basic terms concerning lexicography, dictionaries and dictionary structure are introduced in Chapter 2. Then bilingual dictionaries are described and a distinction is made between monolingual and bilingual dictionaries. Chapter 3 covers also some problem areas in bilingual lexicography, such as pronunciation, the presentation of grammar and the choice of equivalents. Finally, the subject of Chapter 4 is a comparison and analysis of some popular English-Hungarian dictionaries.