血管学 (从希腊 ἀγγεῖον, angeīon, "血管"; 与-λογία, -logia) 是一门专门研究循环系统、淋巴系统相关疾病的科学，例如：动脉, 静脉与淋巴管的问题与疾病，在英国，比较常用血管学这个词；在美国则偏好使用血管医学一词。

现今社会大部分的死因是心血管方面疾病所造成，而血管学正是以预防、诊断与治疗心血管相关级并为宗旨。

动脉疾病包括主动脉(动脉瘤、夹层动脉瘤)以及动脉所供应的四肢、肾脏、大脑、肠子，另外也包括了动脉栓塞、血栓形成与血管炎，如果这些疾病能获得适当地改善，就能避免心肌梗塞、中风发生的机率。相对地，静脉相关疾病则有静脉栓塞、慢性静脉瓣膜功能不全、静脉曲张。淋巴相关疾病则包含原发性和次发性淋巴水肿。

Angiology (from Greek ἀγγεῖον, angeīon, "vessel"; and -λογία, -logia) is the medical specialty which studies the diseases of the circulatory system and of the lymphatic system, i.e., arteries, veins and lymphatic vases, and its diseases. In the UK this field is more often termed angiology, and in the United States the term vascular medicine is more frequent. The field of vascular medicine (angiology) is the field that deals with preventing, diagnosing and treating vascular and blood vessel related diseases.