Aim. To detect the frequency of subclinical atherosclerosis in rheumatoid arthritis patients without clinically evident atherosclerosis and to correlate its presence with the disease activity. Patients and Methods. Our study includes 112 RA patients (group 1) and 40 healthy controls (group 11). All patients and controls were subjected to full history taking, clinical examination, and laboratory investigations. Carotid intima media wall thickness (IMT) and carotid plaques were measured in both groups by B-mode ultrasonography; also color duplex Doppler ultrasound of the brachial artery was done to detect endothelial function. Results. There is atherosclerosis in 31.3% of asymptomatic RA patients compared with only 5% in controls (P = 0.003(**)). A significant difference was detected in patients with and without atherosclerosis regarding duration of the disease (P = 0.0001(***)) and patient's age (P = 0.01(*)). There is highly statistical significant correlation between atherosclerosis and disease activity index. Conclusion. The frequency of subclinical atherosclerosis was high in long-term active RA patients.