Restless Knights is a 1935 short subject directed by Charles Lamont starring American slapstick comedy team The Three Stooges (Moe Howard, Larry Fine and Jerry Howard). It is the sixth entry in the series released by Columbia Pictures starring the comedians, who released 190 shorts for the studio between 1934 and 1959.

Set in medieval times, the patriarch of the Stooges imparts to them, on his deathbed, their noble lineage. Ascending to titles of nobility — Duke of Durham (Larry), Count of Fife (Moe), and Baron of Grey Matter (Curly) — they pledge to safeguard Queen Anne of their ancestral realm, Anesthesia. Rumors circulate of an impending coup orchestrated by Prince Boris, the current prime minister, prompting the Stooges to fulfill their father's charge.

As royal guards under pseudonyms — Duke of Mixture, Fife of Drum, and Baron of Brains — the Stooges find themselves embroiled in intrigue when Queen Anne vanishes during a wrestling match. Disheartened by the contest's outcome, Moe and Curly impulsively substitute for the combatants, with Larry officiating. Following a tumultuous bout, the queen's disappearance casts suspicion on the Stooges, leading to their arrest and sentencing to execution by crossbows.

Fortuitously, the executioners' distraction by a woman undressing affords the Stooges an opportunity to evade their fate. A chance encounter with a dropped jug reveals a crucial clue — the queen's whereabouts concealed in the wine cellar. Employing a plan to incapacitate their adversaries, the Stooges encounter setbacks and comedic mishaps, inadvertently incapacitating each other and, regrettably, the queen. Despite their best intentions, their rescue efforts inadvertently backfire, resulting in their mutual incapacitation. The queen's call for aid amidst the chaos further complicates matters, as additional guards converge on the scene. In a series of missteps, the Stooges unwittingly impede their own rescue mission, resulting in their collective incapacitation.

Restless Knights was filmed on December 19–22, 1934.^[1] The film title Restless Knights is a pun on "restless nights," or chronic insomnia.^[2] Opening theme music was titled "Entry of the Giants," composed by Louis Silvers.^[3]

The title Baron of Grey Matter is a pun on "barren of grey matter.^[2]