The study aimed to determine the relationship between writing anxiety and writing self-efficacy of students learning Turkish as a foreign language. The study sample consisted of 247 international students at B1 and B2 levels at the Turkish Education Application and Research Center of a foundation university. "The Writing Anxiety Scale for Learners of Turkish as a Foreign Language," developed by Sen and Boylu (2017), was used to determine students' writing anxiety. There were 13 items and two factors on the scale: "Action-Oriented Anxiety" and "Environmental Oriented Anxiety." "The Writing Self-Efficacy Scale for Turkish Students who Learn Turkish" was developed by Büyükikiz (2012) to determine the students' writing self-efficacy. This two-factor scale had 16 items and explained 56.85% of the variance. The research was designed based on the relational screening model. SPSS 21.0 package programs were used to analyze the data. The study results indicated a significant positive relationship between writing anxiety and writing self-efficacy of students who learned Turkish as a foreign language. Besides, there was no significant difference between the Turkish learners' scores from the writing anxiety scale and their language level.