Cecelia Ahern is an Irish novelist, renowned for her works such as PS, I Love You, Where Rainbows End, and If You Could See Me Now. Born in Dublin, Ahern's novels are now published in nearly fifty countries, with over 25 million copies sold worldwide. Two of her books have been adapted into major motion films, and her short story collection Roar has been adapted into a series for Apple TV+.

She and her books have won numerous awards, including the Irish Book Award for Popular Fiction for The Year I Met You. Besides publishing several novels, Ahern has contributed short stories to various anthologies and created the ABC comedy Samantha Who?, starring Christina Applegate.