Jill Allyn Rosser (born 1957 in Bethlehem, Pennsylvania), who published under J. Allyn Rosser, is a contemporary American poet.
She grew up in Sparta Township, New Jersey. She graduated from Middlebury College with a B.A. in French and English in 1980' from University of Pennsylvania with a M.A. in English Literature and Writing in 1988; and University of Pennsylvania with a Ph.D. in English Literature in 1991.
She lives in Athens, Ohio, teaching at Ohio University. She is editor of New Ohio Review.
Her poems have appeared in several anthologies, and journals including The Atlantic Monthly, Ninth Letter and Poetry.
Her husband is the poet Mark Halliday.