Arthur may refer to:
- Ser Arthur Dayne, a knight of House Dayne who bore the title Sword of the Morning and weilded their ancestral sword, Dawn. He was considered one of the greatest swordsmen in the Seven Kingdoms and rose to the Kingsguard. He ultimately perished along with his sworn brother, Ser Gerold Hightower, at the Showdown at the Tower of Joy.
- Arthur (little bird), under the command of Qyburn as a spy.
- Arthur Glenmore is a character in the video game adaptation of the series, killed by Ramsay Snow.