Objective: This study was conducted to determine the effect of privacy on anxiety in patients who underwent coronary angiography and elective percutaneous coronary intervention. Material and Methods: This descriptive study was conducted in Erzurum Atatürk University Research Hospital Cardiology Clinic between February 2019 and August 2019. The population of the study consisted of patients who underwent coronary angiography and elective percutaneous coronary intervention in the angiography laboratories of the hospital, and the sample consisted of 159 patient from the specified population who met the inclusion criteria and accepted to participate in the study. The data were collected with the “Descriptive Information Form” and “Static-Trait Anxiety Scale” and “Privacy Questionnaire” prepared in line with the literature. Number, percentage, mean, Mann-Whitney U, Kruskal-Wallis tests were used to evaluate the data. Results: It was determined that the total mean score State-Anxiety Scale of the patients was 47.75±8.07, and the total mean of the Continuity-Anxiety Scale score was 48.77±6.07. In the study, a significant portion of the patients stated that their privacy was protected at a high level during the intervention. When the privacy questionnaire items were compared with the State-Anxiety Scale total score averages, it was found that there was a significant relationship between the items “I had a locker in the angiography unit where I could put my clothes and personal belongings” and “The person or persons in the room during the procedure took care of privacy” (p<0.05). Conclusion: The results of this study showed that the privacy of the patients who underwent coronary angiography and elective percutaneous coronary intervention was taken care of, that the patients experienced moderate anxiety, and that privacy was not effective on the level of anxiety.