Multicultural awareness is crucial for teachers to promote equity in culturally diverse classrooms (Cherng & Davis, 2019). Positive attitude towards diversity predicts stronger cultural sensitivity in teaching (Abacioglu et al., 2020). In Hong Kong where it lacks any policy towards multiculturalism, despite the growing number of non-Chinese multicultural learners, empirical support as to how pre-service teachers develop multicultural awareness and beliefs remains scant. This study analysed preservice teachers' perception of multicultural classrooms qualitatively to elucidate their multicultural awareness. It addressed two questions: 1) how do pre-service teachers understand cultural diversity in classrooms?; and 2) How do they perceive teachers' roles in responding to culturally diverse learners' needs? Nine ethnic Chinese pre-service teachers who joined an informal multicultural education programme in a Hong Kong teacher education university were interviewed. The data were transcribed, and coded with NVivo 12 based on the above questions. The analysis showed that preservice teachers demonstrated awareness of cultural differences in Hong Kong schools, suggesting that the intercultural contact and experiences the programme facilitated were effective. Cultural cliques among students, they believed, can promote quality of learning through co-ethnic peer interaction. Yet, they anticipated the need to go "out of their comfort zone" to teach in English, a language they regard as essential in meeting the learning needs of ethnic minority students more fully, especially those who were less proficient in Chinese language. Implications for research and teacher education for enhancing multicultural awareness in Hong Kong schools will be discussed. Copyright © 2023 World Education Research Association.