Roger Stanton Baum (born 1938) is an American former banker and stockbroker, and currently (as of 2005) a children's author.

Baum is a former resident of Los Angeles, since which he has lived in Missouri (Springfield) and Nevada (Las Vegas).

Baum had written short stories and another children's book, entitled Long Ears And Tailspin In Candy Land (1968), before being asked by the International Wizard of Oz Club in 1987 to write original "Oz" stories.

The success of his "Oz" books allowed him to leave his banking job in 1990, and become a full-time children's author.

His work does not follow the history of the canon Famous Forty Oz books, even disregarding information given by his great-grandfather's fourteen.