The fifth season of Supernatural, an American dark fantasy television series created by Eric Kripke, premiered September 10, 2009, and concluded on May 13, 2010, on The CW.

Paris Hilton guest stars in the episode "Fallen Idols", in which she plays Leshi, a god that takes the form of various well-known faces including herself.

[4] The season also features the return of Jo and her mother Ellen Harvelle, as well as hunter Rufus Turner, the Trickster and the prophet Chuck Shurley.

"U.S. viewers in millions" refers to how many Americans who watched the episode live or on the day of broadcast.

"[31] The episode "Hammer of the Gods" was controversial among Indian and Hindu audiences, as it depicted Kali and Ganesh in a negative light.