This article portrays the prominence of creating language environment in developing Arabic and Englishspeaking skills in Islamic Universities. Arabic and English are compulsory courses in Islamic universities. Students are expected to be able to study about Islamic science and go along with the development of globalization era. Arabic and English have become scientific, academic, and popular language for the international community. Therefore, it is important to learn Arabic and English as a tool to study science. This article focuses on creating language environment for teacher candidates of Education and Teacher Training Faculty in Islamic universities in Indonesia. As the teacher candidates, students of Education and Teacher Training Faculty are obligated to communicate actively using Arabic and English. In consequence, creating language environment well will affect students' mastery of Arabic and English. Language environment in language learning turns out to be an essential factor for leaners to master language. Creating language environment is also critical for their natural language skills development.