* By Species: There are around 260 different species of monkeys recognized by scientists.
* By Family: If you consider all primates within the monkey family, there are over 300 different species that belong to the families Cercopithecidae (Old World monkeys) and Cebidae (New World monkeys).
So, the number of "types" of monkeys can range from 260 to over 300 depending on your definition!