A Frequency Dictionary of Czech is an invaluable tool for all learners of Czech, providing a list of the 5,000 most frequently used words in the language. Based on data from a 100 million word corpus and evenly balanced between spoken, fiction, non-fiction and newspaper texts, the dictionary provides the user with a detailed frequency-based list, as well as alphabetical and part of speech indexes. All entries in the rank frequency list feature the English equivalent, a sample sentence with English translation and an indication of register variation. The dictionary also contains twenty thematically organised and frequency-ranked lists of words on a variety of topics, such as family, food and drink and transport. A Frequency Dictionary of Czech enables students of all levels to get the most out of their study of vocabulary in an engaging and efficient way. It is also a rich resource for language teaching, research, curriculum design, and materials development. Franti¿ek ?ermák is Professor of Czech language and Director of the Institute of the Czech National Corpus, Charles University, Prague. Michal K?en is Head of Computation Technology Department at the Institute of the Czech National Corpus, Charles University, Prague.