Angeltheow, also spelled Angletheow, Engengenthe, or Angenwit (? - c. 477) was the great-great-great-grandfather of Creoda of Mercia and the son of Offa of Angel.
Angeltheow's son was Eomer. According to the Anglo-Saxon Chronicle, Angeltheow is a fourth-generation descendant of Woden, the same generation as Hengest and Horsa.
It is claimed by some that Angeltheow may also be the Swedish king Ongentheow (as mentioned in Beowulf) killed at the Battle of Ravenswood, although the battle is said to have taken place some time after the former is reported to have died.