Diabetes and high blood pressure are severe chronic metabolic diseases with significant global public health implications. To explore the medicinal plants used by the Moroccan population for treating diabetes and hypertension, a prospective study was conducted through ethnobotanical surveys at various locations, including hospitals and health centers in the cities of Tanger-Tétouan using a semi-structured questionnaire. The study findings indicated that out of the 45 plants mentioned (belonging to 19 different families dominated by the Lamiaceae) by the participants in the ethnobotanical survey, 32 were reported to have anti-diabetic properties. Among these, the most commonly used by diabetic subjects were Olea europaea L. (RFC = 16,71%), followed by Trigonella foenum-graecum L., Origanum compactum Bentham and Artemisia herba alba Assac. Additionally, 24 plants were identified as having hypotensive effects. The most popular among them were Olea europaea var. sativa, Trigonella foenumgraecum L., Allium sativum L. and Origanum compactum Bentham. Interestingly, eleven plants were found to be used for both diabetes and hypertension treatment, including Olea europaea var. sativa, Trigonella foenum-graecum L., Origanum compactum Bentham, Rosmarinus officinalis L., Nigella sativa L., Ajuga iva (L.) Schreb, Pistacia lentiscus L., Juniperus phoenicea L., Eugenia caryophyllata L., Arbutus unedo L., and Centaurium erythraea Rafn. Aerial parts of the plants were most commonly used, and the preparation methods mostly involved infusion and decoction. This study holds significant importance for conserving traditional knowledge related to antidiabetic and antihypertensive plants, while also raising the prospect of further scientific research in this field.