In intercultural and transcultural communication contexts within multilingual education, English learners should be able to communicate and interact with other people who have a different linguistic and cultural backgrounds. For this reason, intercultural content should be incorporated in EFL textbooks to promote learners' intercultural competencies and communication skills. The contents are designed to contain Anglo American and British cultural dimensions and learners' home and foreign cultures. It is to prepare learners to become global citizens. The principal aim of this study is to investigate how teachers apply English textbooks to promote learners' intercultural competencies and intercultural communicative skills within multilingual education. It is a qualitative study consisting of three main data gathering methods: semi-structured interviews, classroom observations, and group discussions. Given the research data focusing on teachers' English textbook practices, researchers play a role within multiple realities. The data were collected using semi-structured interviews, classroom observations, and group discussion to gather the research data. This article showed that intercultural representations incorporated in EFL textbooks are used as useful resources for helping learners develop their intercultural competences and communication skills. Also, the ways teachers carry out their teaching in the classes are measured. This study shows that the teachers employ EFL textbooks effectively with utilizing potential teaching materials containing cultural values to promote learners' intercultural competences and communicative skills within multilingual education. This study also suggests that English teachers need reinforcement in multilingual education.