Ingjald illråde or Ingjaldr hinn illráði was a semi-legendary Swedish king of the House of Ynglings, son and successor of King Anund, and the father and predecessor of King Olof Trätälja. As with many of the 5th-7th century Yngling Kings of Sweden, his historicity is contested.

The Ynglings were a dynasty of kings, first in Sweden and later in Norway, primarily attested through the poem Ynglingatal. The dynasty also appears as Scylfings in Beowulf. When Beowulf and Ynglingatal were composed sometime in the eighth to tenth centuries, the respective scop and skald (poet) expected his audience to have a great deal of background information about these kings, which is shown in the allusiveness of the references.