Fighters from Mars is the name of two unauthorized, edited versions of H. G. Wells' original The War of the Worlds serial.

The first version appeared in the New York Evening Journal between December 5, 1897 and January 11, 1898, and was entitled Fighters from Mars, or The War of the Worlds.

The editor(s) of these versions changed the setting to the local area where the newspapers were on sale, and also edited out most of the passages containing science, science details pertaining to ordinary people, and problematic actions by the narrator.

Even though they are considered unauthorized, it does seem that Wells may have inadvertently given the go ahead to the versions, as can be seen from a letter that was published in the magazine The Critic in March 1898, where Wells states: "Yet it is possible that this affair is not so much downright wickedness as a terrible mistake."

Rocket scientist Robert H. Goddard read both Fighters from Mars and Edison's Conquest of Mars and credited them with helping form his early interest in developing rockets for interplanetary exploration.