The use of English language in the education sector serves as a means of effective communication and facilitates the acquisition of the target language among students. However, there are still many students who have problems with their speaking skills. One of the solutions to improve the students’ speaking skills is through the TikTok application.  It is because the students are close to social media, and most of the time they spend on social media.

This research was conducted to explore the use of the TikTok application in enhancing senior high school students’ speaking skills. This research was conducted through Classroom Action Research. To measure the improvement of the students’ speaking skills, the research used pre-test and post-test.

In this research, the TikTok application was implemented in some activities as follows:1)The students practiced pronunciation and speaking using duet videos that are available on TikTok, 2)The students made a video using the “duet” feature. This research found out that the TikTok application is effective to enhance Senior High School students’ speaking skills (M = 12.71, SD = .46); t=8.42, p=.000.