Rosina Ruth Lucia Park AM was a New Zealand–born Australian author. Her best known works are the novels The Harp in the South (1948) and Playing Beatie Bow (1980), and the children's radio serial The Muddle-Headed Wombat (1951–1970), which also spawned a book series (1962–1982).

The Harp in the South is the debut novel by New Zealand-born Australian author Ruth Park. Published in 1948, it portrays the life of a Catholic Irish Australian family living in the Sydney suburb of Surry Hills, which was at that time an inner city slum.