热带医学是医学领域的一个分支，是研究主要发生于热带和亚热带地区的危害人类健康的疾病及相关问题的一门科学。随着全球气候变化及疾病的传播与扩散，有些原来仅见于热带或亚热带地区的疾病已经不再局限于这些地区。因此，热带医学的概念已经不再具有明确的地理上的意义了。

Tropical medicine (also sometimes called International medicine) is the branch of medicine that deals with health problems that occur uniquely, are more widespread, or prove more difficult to control in tropical and subtropical regions.

Many infections and infestations that are classified as "tropical diseases" used to be endemic in countries located in the tropics. This includes widespread epidemics such as malaria, Ebola and hookworm infections as well as exceedingly rare diseases like lagochilascaris minor. Many of these diseases have been controlled or even eliminated from developed countries, as a result of improvements in housing, diet, sanitation, and personal hygiene.