Cardiovascular diseases (CVDs) are a leading cause of mortality worldwide, prompting research into potential risk factors. Sleep disorders (SDs), affecting a significant proportion of the population, may contribute to cardiovascular risk. This review examines key studies on the relationship between sleep duration, SDs, and CVDs. Wang et al. demonstrated that short sleep (< 6–7 hours) increases the risk of coronary artery disease (OR  =  1.24) and myocardial infarction (OR = 1.20), while Yin et al. reported a U-shaped relationship between sleep duration and CVD risk. Additionally, Zheng et al. found that insomnia symptoms significantly elevate risks of ischemic heart disease and stroke, and Li et al. confirmed that obstructive sleep apnea doubles the risk of stroke (RR  =  2.10). These studies underline the importance of both adequate sleep duration and effective management of sleep disorders to mitigate cardiovascular risk. Healthcare professionals should incorporate sleep assessment into routine cardiovascular risk evaluation.