Social media TikTok, as one of the platforms favored by the younger generation, has become a space for both visual and verbal expression that influences users’ communication patterns. This study aims to describe communication patterns on social media through code-mixing practices and to identify the factors influencing them. The method used is descriptive qualitative, with data sources in the form of TikTok videos, while data collection techniques are carried out through observation of utterances in those videos. The results show that the forms of code mixing that appear include insertion, alternation, and congruent lexicalization. The factors influencing the occurrence of code mixing include role identification, variety identification, and the speaker’s desire to clarify or emphasize meaning. Therefore, this study shows that code mixing in TikTok creators’ utterances not only functions as a linguistic practice but also as a communication strategy that reflects cultural identity and the expression of the younger generation on social media.
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