Eando Binder was the shared pen name of science-fiction writers Earl Andrew Binder (1904–1966) and his brother Otto Oscar Binder (1911–1974). The name was formed from their initials. Their stories include the Adam Link robot tales, beginning with “I, Robot,” published in 1939. After about 1934, Otto continued using Eando Binder as Earl moved away from writing.

Otto Binder also wrote extensively for comic books, including Captain Marvel and Superman stories.