Krueger is to appear in the Vampire Diaries spinoff as a tourist who finds himself trapped in the dark underbelly of New Orleans by entering Marcel's (Charles Michael Davis) bar.
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He is expected to appear in at least three episodes, according to TV Guide.
Krueger is perhaps best known for playing Ben Coogan in Pretty Little Liars, and has also starred in Anger Management and Two and a Half Men.
The Originals centres on Vampire Diaries character Klaus (Joseph Morgan) returning to New Orleans in a quest to become king.
The CW will premiere The Originals on Thursday, October 3 at 9pm ET.