Speaking skill is one of the most practical ways for individuals to express themselves in a second language. This skill, often realized through the use of standard language, also holds importance in terms of communication when elements of colloquial are employed when necessary. This is because target language users predominantly communicate with each other through colloquial. Therefore, at times, the teaching of colloquial may be relevant for second language learners as well. In line with this, the aim of the study is to examine the importance of colloquial in teaching Turkish as a second language and determine instructors' perspectives on its contribution to language skills development and communicative success. The study was conducted using a qualitative research method, specifically a phenomenological design. The participants consisted of instructors working at TÖMER (Turkish Language Teaching Center) in various cities of Turkey. Data were collected through interviews utilizing a semi-structured interview form. The analysis of the obtained data was conducted through content analysis. At the end of the research, it was found that a significant majority of the participants emphasized the importance of focusing on colloquial for students to be able to communicate in real-life situations, while some participants stated that it was unnecessary. Based on the findings, it is suggested that the teaching of colloquial should be applied in Turkish language instruction for second language learners when appropriate, and that utilizing real-life experiences is important in doing so. Furthermore, it is recommended to provide learners with an understanding of the similarities and differences between standard language and colloquial.