Purpose: To correlate voice-related quality of life, anxiety, and depression symptoms pre- and post-thyroidectomy. Methods: Observational, longitudinal, prospective, and quantitative study. Twenty patients participated in the study, with a mean age of 54 years, who underwent thyroidectomy, laryngeal visual examination, and the Voice-Related Quality of Life and Hospital Anxiety and Depression Scale questionnaires at different times: preoperative, 1 week and 3 months post-thyroidectomy, with a higher prevalence of females (85%; n=17) and partial thyroidectomy (70%; n=14). Results: There was no statistical difference in voice quality of life between the moments, but lower preoperative scores were observed, especially in the physical domain. We observed a slight trace of anxiety in the preoperative period, with a reduction after 1 week and an increase after 3 months. There was a moderate negative correlation between the physical domain of QVV and the anxiety subscale and the total HADS score after 1 week and between the total domain of QVV with the total HADS score after 1 week, weak negative correlation between the total domain of QVV and the HADS anxiety subscale after 1 week and the total HADS score after 3 months. Conclusion: The patients evaluated in this study self-perceived their voice-related quality of life as positive. Mild anxiety traits were identified, with a reduction after one week postoperatively and an increase after three months. The self-perception of better voice-related quality of life in the postoperative period is weakly related to the reduction of anxiety levels.