"Special Delivery" is a science fiction short story by American writer Damon Knight.

It first appeared in the April 1954 issue of Galaxy Science Fiction and has been reprinted a number of times, in Operation Future (1955), Far Out (1961), and The Best of Damon Knight (1976).

Moira begins to act strangely; it seems as if someone else, a child, is sometimes speaking through her mouth, and she develops aversions to alcohol and coffee.

Eventually they realize that the unborn baby, Leo (who named himself for Leonardo da Vinci), is communicating with and through the mother.

By his eighth month, Leo is requiring Moira to work her way through texts on biology, astrophysics, modern literature, etc.