Too Many Magicians is a novel by Randall Garrett, an American science fiction author.

One of several stories starring Lord Darcy, it was first serialized in Analog Science Fiction in 1966 and published in book form the same year by Doubleday.

This Sherlock Holmes-like figure is assisted by Master Sean O’Lochlainn, a forensic sorcerer.

The novel is a locked room mystery, which takes place at a wizards’ convention.

Analogues of Nero Wolfe, Archie Goodwin, James Bond and Gandalf the Grey appear.