Mallor is a fictional character from J. R. R. Tolkien's universe of Middle-earth. He was the son and heir of King Beleg of Arthedain and came to the throne in 1029 T.A. at the death of his father, when he was 134 years old.
During his reign the Istari came to Middle-earth from Valinor, but at the time their origin was not known.
Near the end of his reign it was revealed that the shadow that had fallen over Mirkwood came from Dol Guldur, but Sauron's presense there remained unknown.
Beleg died in 1110 T.A. and was succeeded by his son Celepharn.
