Chloe Ann Sullivan is a fictional character from the television series Smallville, played by Allison Mack. Chloe was introduced by the show's creators to be a "Lois Lane archetype" (but not Lois herself). She was created independently of the canonical , DC Comics had announced that they would introduce a comics version of Chloe Sullivan to the mainstream continuity of DC Comics in Superman #674 and 675 in March and April of 2008, but the plan fell through.

Chloe is reporter and editor at Smallville High School's The Torch newspaper (named after Superman creator Jerry Siegel's school paper). She was in the same grade as Clark Kent, Pete Ross, and Lana Lang. At one time, Chloe maintained the "Wall of Weird", a collection of articles concerning the bizarre and eerie events that take place in Smallville, many of which are related to the mutagenic effects of Kryptonite left over from the meteor shower of 1989.

Currently, Chloe is enrolled at Metropolis University, majoring in journalism and working at the Daily Planet. She is close to her cousin Lois Lane.