Little Boy Lost is a dramatic novel by Marghanita Laski that was published in 1949.

The novel focuses on Hilary Wainwright, an English man, on the search for his lost son in the ruins of post-war France.

Hilary at first resents the child he finds because it interferes with memories of his late wife.

[1] A motion picture version of the same title starring Bing Crosby was released in 1953.

In 1949 Kirkus Reviews found Little Boy Lost "An inescapably affecting story where sentiment is edged by bitterness",[2] while in 2001 Nicholas Lezard of The Guardian wrote "If you like a novel that expertly puts you through the wringer, this is the one."