Objective: This study was planned to determine the fear levels of individuals with coronary artery disease against COVID-19 and their relationship with insomnia. Material-Method: This research was planned in descriptive design. The research was carried out with patients who were being treated in the cardiology clinic of a training and research hospital in the province of Van. The population of the study consisted of 290 patients who were treated in the clinic between May-July 2021. The sample of the study, on the other hand, was determined as 165 patients, who agreed to participate in the study and as a result of the statistical analysis performed with a 5% margin of error and 95% confidence interval. Data were collected using the patient information form, the COVID-19 Fear Scale, and the Bergen Insomnia Scale. SPSS-22 package program was used to evaluate the data. Results: The age range of 73.9% of the individuals participating in the study was 45-68, 58.8% were male, 87.9% were married, 53.3% had COVID-19 disease, 78.8% had COVID-19 found to be vaccinated. Considering the scale total score averages of the individuals participating in the research; the mean score of the COVID-19 fear scale (22.12±6.10) and the total mean score of the Bergen insomnia scale (17.36±7.42) were determined. As a result of the analysis performed to determine the relationship between the scale total score averages, a moderate, positive significant relationship was found (r=0.480, p<0.01). Conclusion: Considering the Results of the study, it was determined that the patients' fear of COVID-19 was moderate. Although the average insomnia score level of individuals with Coronary Artery Disease was moderate, it was found that all patients included in the study had sleep problems. Considering the relationship between fear of COVID-19 and insomnia, it was concluded that fear caused by COVID-19 disease causes individuals to be sleepless.