This study analyzes the current application of Multiple Intelligences Theory in English language teaching in terms of textbooks and materials. Moreover, teachers’ perceptions of issues related to MI theory, selection of textbooks and extra materials are discussed. Six current English textbooks are analyzed in order to know how they respond to MI theory and to what extent the textbook activities help enhance language learners’ intelligences. Two groups of ELT teachers, Brazilian and International, answered a survey about their teaching contexts, teaching experience, selection of textbooks and materials, and MI theory. The study shows that MI is known and used by ELT teachers. In regards to textbooks, results show that the activities in the textbooks analyzed mainly cater to 4 intelligences: verbal/linguistic, intrapersonal, spatial/visual, and interpersonal. Suggestions on exploitation and supplementation of textbooks are made in order to include most intelligences in language teaching and to consider learners’ intelligence profiles.