The present study investigates the association between the self-reported diagnosis of noncommunicable disease (NCD) and the adherence to social distancing and the use of health services during the COVID-19 pandemic. This was a cross-sectional study with Brazilian adults who participated in the ConVid- Behavior Survey, conducted online between April 24 and May 24, 2020(n = 45.161). This studyconsidered the following NCDs: diabetes, hypertension, respiratory disease, heart disease, and cancer, and evaluated the use of health services and the adherence to social distancing, as well as estimated the prevalences and adjusted prevalence ratio (aPR); 33,9% (95% CI: 32,5-35,3) referred to one or more NCD. Individuals with NCDsshowed a greater adherence to intense social distancing (aPR: 1,07;95% CI: 1,03-1,11), sought out health services more often (aPR:1,24; 95% CI:1,11-1,38), and found greater difficultyin scheduling doctor's appointments (aPR:1.52; 95% CI 1,35-1,71), receiving healthcare treatment (APR:1,50;95% CI:1,22-1,84) and medication (APR:2,17;95% CI:1,77-2,67), and performing examinations (APR:1,78;95% CI:1,50-2,10) and scheduled interventions (APR:1,65;95% CI:1,16-2,34). The presence of NCDs was associated with social distancing, seeking out health care, and difficulty in using health services.