Oz Imitations began to appear soon after the publication of The Wonderful Wizard of Oz in 1900.

As with the previous year's Father Goose, the initial critical and commercial success of the first Oz book inspired other writers, artists, and publishers to attempt to replicate it. Among the most prominent and noteworthy examples of this trend are:

There are also many other books that have been classified as Oz imitations or pastiches in the years and decades that followed 1900.

The two 'Oz writings' by Frank Joslyn Baum which are The Laughing Dragon of Oz and Jimmy Bulber in Oz (both written in 1934) are sometimes considered imitations.