Ada Hayden (an haife ta a ranar 14 ga watan Agustan shekara ta 1884 - ta mutu a ranar 12 ga watan Agustan shekara ta 1950) wani Ba'amurke ne masanin ilimin tsirrai, mai ilmantarwa, kuma mai kiyayewa. Ita ce mai kula da Jami'ar Iowa ta Herbarium, wacce aka sauya mata suna zuwa Hay Hayden Herbarium (ISC) don karrama ta a shekara ta 1988. A yayin aikin ta, ta kara samfuran samfu 40,000 zuwa herbarium. Karatunta da aikin kiyayewa sun kasance masu mahimmanci musamman don tabbatar da adana babban prairie mai tsayi. The Hayden Prairie State Adana, yanki na farko da aka keɓe azaman kiyayewa a ƙarƙashin Dokar Tsaron Jiha ta Iowa na shekara ta 1965, an laƙaba mata suna don girmama ta. Har ila yau, an lasafta ta a cikin girmamawarta shi ne Ada Hayden Park Park a Ames, Iowa. Ada Hayden an haife ta a ranar 14 ga watan Agustan shekara ta 1884 kusa da Ames, Iowa ga Maitland David Hayden da Christine Hayden. Yayin da yake makarantar sakandare, Louis Hermann Pammel ya zama jagoranta.