Australian actress Fisher was named number one on a list of 30 nominees for redheads.
La La Land star Emma Stone came in second, while TV host Stacey Dooley (now pregnant with her first child) came in third.
Ranked fourth in a poll of 2,000 Britons, Prince Harry still held the title of sexiest ginger man in the world.
The 38-year-old defeated Ewan McGregor and Eddie Redmayne to win the title.
Also included in the list of “Most Attractive Men Ginger” were Michael Fassbender and Benedict Cumberbatch.
Lindsay Lohan, Amy Adams, Julianne Moore and Jessica Chastain also made the list.
They were joined by Karen Gillan, Jeri Horner and Nicola Roberts.
The final ranking also included Tom Hiddleston and Rupert Grint.
Harriett Scott of GingerComms, who commissioned the survey, said he was “delighted” to have so many Britons in the top 30.
“We are delighted to see so many Brits in the top 30, including Stacey Dooley at No. 3.”
Prince Harry will release his autobiography, Spare, on January 10.