This mixed-methods study investigates how TikTok aids Gen Z EFL learners in Kazakhstan to improve their English language proficiency and develop intercultural communication competence (ICC). Using survey data (n=50), semi-structured interviews (n=10), and content analysis of 30 TikTok videos, the study finds important themes such as digital engagement, pragmatic learning, cultural openness, and language variance. The levels of critical thinking and adaptive communication differed by level of proficiency, despite the participants' considerable knowledge of cultural diversity and worldwide English usage. According to the research, TikTok serves as a casual but effective platform for language learning and cross-cultural inquiry.