Dream of the Rarebit Fiend is a newspaper comic strip by American cartoonist Winsor McCay, begun September 10, 1904. It was McCay's second successful strip, after Little Sammy Sneeze secured him a position on the cartoon staff of the New York Herald. Rarebit Fiend appeared in the Evening Telegram, a newspaper published by the Herald. For contractual reasons, McCay signed the strip with the pen name "Silas".

Zenas Winsor McCay was an American cartoonist and animator. He is best known for the comic strip Little Nemo and the animated film Gertie the Dinosaur (1914). For contractual reasons, he worked under the pen name Silas on the comic strip Dream of the Rarebit Fiend.