Ethnomedicine, the traditional medical practices and beliefs of a particular cultural or ethnic group, may offer cost-effective and culturally acceptable treatment options for diabetes. Ethnomedicine encompasses various traditional healing practices, such as herbalism, acupuncture, and massage therapy. This article reviews the current evidence-based state of ethnomedicine for diabetes, focusing on the efficacy, safety, and mechanisms of action of selected ethnomedical interventions. The results indicate that some ethnomedical practices, such as herbal remedies and dietary interventions, may have beneficial effects on glycaemic control, insulin sensitivity, and oxidative stress in diabetes. However, the evidence is inconsistent and limited by methodological flaws, such as small sample size, lack of control group, and inadequate reporting. Moreover, some ethnomedical interventions may pose significant risks, such as drug interactions and adverse effects. Therefore, it is essential that patients consult with their healthcare provider before using any ethnomedical interventions for diabetes and that these interventions be rigorously evaluated using scientific methods.