Kathryn Lindskoog (December 26, 1934 to October 21, 2003) was a C.S. Lewis scholar known largely for her theory that some works attributed to Lewis are forgeries, including The Dark Tower.

The main target of Lindskoog's writing was Walter Hooper, Lewis' literary executor who edited most of Lewis' posthumous work. Lindskoog argues that Hooper exaggerated his relationship with Lewis and may have published several works under Lewis' name. Lewis scholars are split about whether Lindskoog's charges have merit.

Partial bibliography

• Surprised by C.S. Lewis George Macdonald and Dante: A Batch of New Discoveries

• Sleuthing C.S. Lewis: More Light in the Shadowlands

• C.S. Lewis, Mere Christian

• Light in the Shadowlands: Protecting the Real C.S. Lewis.

• The C. S. Lewis Hoax