eDNA (environmental DNA) refers to DNA isolated from various natural settings for the purpose of laboratory screening for genes encoding certain functions.

Edna St. Vincent Millay

Dame Edna Everage

Edna, a character from the Old Testament Book of Tobit (mother of Sara)

Edna, Texas

Edna, Kansas

Edna is a female given name. It can refer to:

Edna Krabappel, a fictional character from the Simpsons television series

Edna Mode, a fictional character from The Incredibles voiced by Brad Bird

Edna Turnblad, Tracy Turnblad's mother in Hairspray, a 1988 film, a Broadway musical, and a 2007 musical film