Yes, you can apply for the Common University Entrance Test (CUET) in English medium even if you completed your 12th in Hindi medium. CUET allows candidates to choose their preferred language for the exam, so you can select English as the medium. However, ensure you are comfortable with the English language, especially for subjects like Humanities, as the questions will be in English. Prepare thoroughly by practicing English comprehension and vocabulary. You can also refer to bilingual study materials if needed. Your medium of instruction in school does not restrict your choice of exam language for CUET.