The Young Unicorns (1968), ISBN 0-374-38778-8) is the title of a young adult suspense novel by Madeleine L'Engle. It is the third novel about the Austin family, taking place between the events of The Moon by Night (1963) and A Ring of Endless Light (1980). Unlike those two novels and Meet the Austins (1960), it does not center on Vicky Austin specifically, but on a family friend, Josiah "Dave" Davidson.