The Impatient Patient is a 1942 Warner Bros. Looney Tunes cartoon directed by Norman McCabe. The cartoon was released on September 5, 1942, and stars Daffy Duck. The film is set in a mad scientist's laboratory.

Adding to the medical theme, the signatures of the personnel credited (McCabe, writer Don Christensen, animator Vive Risto and music composer Carl Stalling) were featured in the opening credits, just as a doctor would sign a prescription.