Grace Olive Wiley (February 18, 1883 – July 20, 1948) was an American herpetologist best known for her work with venomous snakes.

[2] In 1923, she was named a curator at the Minneapolis Public Library which had an extensive collection of live reptiles and amphibians in its now-defunct natural history museum.

[6] She also left snakes' cages open for long periods of time and permitted venomous species to crawl throughout her workspace.

[8] After parting ways with Brookfield Zoo, Wiley moved to California, where she became a snake trainer and reptile consultant for Hollywood films such as Moon Over Burma, The Jungle Book, and the Tarzan series.

[9] She also operated a reptile zoo in Cypress, California, where she charged 25 cents for visitors to see her large, personal collection.

[10] Although family and friends tried to preserve her collection, it was ultimately auctioned off, and the snake that killed Wiley was subsequently displayed at an Arizona roadside attraction.