On an Odd Note is a collection of short stories written by Gerald Kersh, published as a paperback original by Ballantine Books in 1958.

"Frozen Beauty", "Fantasy of a Hunted Man" and "The Gentleman All in Black" originally appeared under the "Waldo Keller" byline.

[2] Anthony Boucher, despite faulting the story selection as a chaotic mix of genres, noted that the book "is unified by the ever-captivating Kersh personality."

Boucher concluded that while "Mr. Kersh can (and often does) write a trite or inept story, .

"[3] Everett F. Bleiler found On an Odd Note to be "a collection of Kersh's more important fantastic stories.