The Krewe of King Arthur was formed in 1977 by the youngest Carnival captain in history, Philip Fricano, Jr.
In 2001, King Arthur moved its parade from the Westbank to the current Uptown New Orleans route.
In 2022, King Arthur made history with its largest membership ever, at over 2,400 riders.
According to Mardi Gras Guide, it is the third largest krewe in New Orleans and the largest Krewe on the first weekend of Mardi Gras {{columns-list|colwidth=30em| The Krewe of King Arthur presents a King Arthur and Queen Guinevere annually.It also includes Merlin the Magician, Morganna Ley Fay, Sir Lancelot, Sir Dagonet[2] Trinkets, collectables, masks, and beads tossed by hand from riders of the floats are called throws.
Throws from Krewe of King Arthur include wizard hats, puzzles, plush footballs, frisbees, headbands, stuffed animals, and selfie sticks.