民都洛水牛（Bubalus mindorensis），又名塔摩洛水牛、菲律宾水牛、棉兰老水牛或明多罗水牛，是一种细小的水牛。牠们是菲律宾民都洛的特有种，且是菲律宾内唯一的牛科。一般相信牠们也曾在吕宋出没。牠们原先分布在整个民都洛，由海边至海拔2000米以上的山区，但因人类的发展及猎杀，现只限于一些偏远的草原，且是濒危物种。

与一般信念及以往分类不同，民都洛水牛并非沼泽水牛或水牛的亚种。民都洛水牛较沼泽水牛多毛，面上有较浅色的斑纹，角较短，且不是群居的。牠们是菲律宾内最大的本土陆上动物。

The tamaraw or Mindoro dwarf buffalo (Bubalus mindorensis) is a small, hoofed mammal belonging to the family Bovidae. It is endemic to the island of Mindoro in the Philippines, and is the only endemic Philippine bovine. It is believed, however, to have once also thrived on the larger island of Luzon. The tamaraw was originally found all over Mindoro, from sea level up to the mountains (2000 meters above sea level), but because of human habitation, hunting, and logging, it is now restricted to only a few remote grassy plains and is now an endangered species.