Objective: The aim of this study was to investigate the validity and reliability of the Re-injury Anxiety Inventory (RIAI) in Turkish language. Material and Method: One hundred athletes aged between 16 to 50 years and being treated due to sports-related injury were included in the study. They completed the RIAI twice (with a 48-to-80 hours interval). Construct validity was analyzed with the Tampa Scale for Kinesiophobia (TSK). Cronbach alpha was used to assess internal consistency. Intraclass correlation coefficient (ICC) was used to estimate the test-retest reliability. Results: A low level correlation (r=0.225) was found between the scores of TSK and Rehabilitation Re-injury Anxiety (RIA-R) scale, and a moderate level correlation (r=0.401) was found between the scores of TSK and Reentry into Competition Re-injury Anxiety (RIA-RE). The internal consistency of the Turkish version of the RIAI was reported to have an excellent Cronbach's alpha coefficient of 0.932. Furthermore, the Turkish version of RIAI showed a high level of test-retest reliability with an intraclass correlation coefficient (ICC) of 0.919. Conclusion: Given the excellent validity and reliability scores, the Turkish version of the RIAI reported by this study was proven to be a promising tool for assessment of the re-injury anxiety of the Turkish athletes.