Quest for Camelot (released internationally as The Magic Sword: Quest for Camelot) is a 1998 American animated musical fantasy film produced by Warner Bros. Feature Animation, directed by Frederik Du Chau, and very loosely based on the 1976 novel The King's Damosel by Vera Chapman. It features the voices of Jessalyn Gilsig, Cary Elwes, Gary Oldman, Eric Idle, Don Rickles, Jaleel White, Jane Seymour, Pierce Brosnan, Bronson Pinchot, Gabriel Byrne, John Gielgud (in his final film role), Frank Welker, and Sarah Rayne, with Andrea Corr, Bryan White, Celine Dion, and Steve Perry providing the singing voices of Gilsig, Elwes, Seymour, and Brosnan. The story follows the adventurous Kayley (Gilsig), whose father was a Knight of the Round Table killed by the power-hungry Sir Ruber (Oldman). When Ruber's renewed plot to usurp Camelot from King Arthur (Brosnan) by stealing Arthur's sword Excalibur goes awry, Kayley enlists the help of the blind hermit Garrett (Elwes) and a two-headed dragon, Devon and Cornwall (Idle and Rickles), to help her retrieve the sword and save the kingdom.

Initially titled The Quest for the Holy Grail, the film was announced in May 1995 as Warner Bros. Feature Animation's debut project, with Bill Kroyer and Du Chau jointly directing the film. It began production later that year, but faced delays when animators were reassigned to help finish Space Jam (1996). During the interim, the story was heavily re-tooled, with the story's central focus being changed from the Holy Grail to Excalibur. Creative differences spurred by these alterations resulted in prominent members of the animation and management staff, including Kroyer, leaving the project. Due to its troubled production, the film's release was pushed back by six months. Animation was mostly done in Glendale, California and in London.

Quest for Camelot was released by Warner Bros. under their Family Entertainment label on May 15, 1998, in the US and Canada. It received mixed reviews and was a critical and commercial failure, grossing $38.1 million against a $40 million budget. One of the film's songs, "The Prayer", won the Golden Globe Award for Best Original Song and was nominated for the Academy Award for Best Original Song.

Sir Lionel, a knight of the Round Table, is killed foiling an assassination attempt on King Arthur by the evil Sir Ruber, who is then driven off by Excalibur, Arthur's sword. During Lionel's funeral, Arthur informs Lionel's widow Lady Juliana and his daughter Kayley that Camelot is always open to them. Kayley dreams of becoming a knight, like her father, and she trains herself while working on the farm.

A decade later, Ruber's griffin attacks Camelot and steals Excalibur, leaving Arthur injured. Merlin the wizard's pet falcon Ayden attacks the griffin, causing it to drop the sword into the Forbidden Forest. When Kayley learns what has occurred, she plans to search for Excalibur, but gets into an argument with her mother, who fears for her life. Ruber attacks the farm and abducts Kayley and Juliana with intent of using them to gain access to Camelot. He uses a potion he acquired from witches to fuse his henchmen and a henpecked rooster named Bladebeak with their weapons. Ruber becomes angry when he learns Excalibur is lost in the Forbidden Forest. Overhearing this, Kayley escapes into the forest, pursued by the steel men and Bladebeak. She is saved by a blind hermit Garrett and Ayden. After learning of the theft, Garrett plans to find Excalibur with Ayden and Kayley persuades Garrett to let her join the quest. Meanwhile, Ruber learns of this from Bladebeak and decides to follow them to obtain Excalibur.

Kayley and Garrett encounter a wisecracking two-headed dragon Devon and Cornwall. The two dislike each other and dream of being separated; due to their disagreement, they cannot fly or breathe fire. After helping them evade from a group of attacking dragons, who are taken out by Ruber and his henchmen, Devon and Cornwall join their quest. During a night of rest, much to Kayley's reluctance, Garrett reveals he was once a stable boy in Camelot who dreamt of becoming a knight. While saving horses from a fire, he was kicked in the head which caused his blindness. Following the accident, Lionel still believed in Garrett and trained him personally. Garrett teaches Kayley more about the forest, including the existence of magical healing plants.

The next day, after only finding Excalibur's belt in a giant footprint, Kayley's frustrated ranting unintentionally distracts Garrett from hearing Ayden's warning, causing him to get injured by Ruber's men. Kayley saves him by using the sentient trees to trap Ruber and his men. She escorts Garrett to a remote cave where she uses a healing plant to heal his wounds. They reconcile and profess their love for each other. Discovering the scabbard, the group enter a giant cave where a rock-like ogre holds Excalibur, using it as a toothpick. They recover Excalibur and manage to evade Ruber.

After reaching the end of the forest, Garrett gives Excalibur to Kayley and returns to the forest, claiming he does not belong in Camelot. However, Ruber captures Kayley and takes Excalibur. He melds it to his right arm with his potion before imprisoning Kayley in the wagon with Juliana. Devon and Cornwall witness this and inform Garrett, who decides to go and rescue Kayley. By collaborating for the first time, Devon and Cornwall are able to fly and breathe fire, and they fly Garrett to Camelot. Meanwhile, Bladebeak reconciles with his constantly henpecking hen and frees Kayley from her ropes. She warns the guards of Ruber's trap, exposing him and his steel men. Garrett, Devon and Cornwall arrive shortly to assist.