Gwyn Hyman Rubio (born August 7, 1949) is an American author, best known for her novel Icy Sparks.

Rubio was born in Macon, Georgia, and graduated from Florida State University in 1971 with a degree in English. She then joined the Peace Corps and spent several years working as a teacher in Costa Rica. After returning to the U.S. and settling in Kentucky she became interested in writing, ultimately receiving a Master of Fine Arts in Creative Writing from Warren Wilson College in 1986.

She wrote for a decade before her first novel Icy Sparks was published in 1998. The book received favorable reviews from critics, but sales were modest until Icy Sparks was selected for Oprah's Book Club in 2001. Rubio's second novel, The Woodsman's Daughter, was published in 2005.

Rubio's father was Mac Hyman, author of No Time for Sergeants.

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