Daniel Atha (born 1962) is a botanist. In his work as a botanist he has collected plants in all 50 states of the United States of America, as well as several additional countries. Atha's work is focused on three areas: "floristics—what plants grow in a particular region; taxonomy—how to tell one plant from another, what to call it and what it's related to; and applied botany—how plants are used for food, medicine, shelter and other useful purposes." Atha is a prominent regional botanist, and the high-profile botanical projects with which has been involved (such as the recent Spontaneous Flora of Central Park project) have garnered national and international attention.