The frequency of clinically significant coronary artery disease (CAD) among stroke patients and the impact of CAD on stroke rehabilitation were studied in 132 patients with first thrombotic or embolic stroke who participated in comprehensive rehabilitation. Sixty‐one patients (46%) had a history of CAD, and 16 of the 61 also had congestive heart failure (CAD‐CHF). Patients with CAD, and especially those with CAD‐CHF, had significantly longer intervals from stroke onset to rehabilitation admission (p< .001), and once in rehabilitation they experienced three times as many cardiac complications (p< 0.001). While all patient groups improved function during rehabilitation, those with CAD and CAD‐CHF unproved significantly less than did those without CAD (p< 0.01). Patients with CAD did least well with rolling, moving in bed, transferring from a wheelchair to bed, and walking. CHF not only adversely influenced overall function and mobility task performance but also affected the potential for achieving functional gains. These data suggest that specific measures of function and rehabilitation are affected by CAD and that the levels of achievement for patients with CAD‐CHF are limited. (Stroke1988;19:42–47)