Fraser was senior VP, worldwide sales, at eOne Television International.
Her departure follows that of distribution chief Peter Emerson, who announced he was leaving in May.
He was replaced by former Sony executive Stuart Baxter who has come in as president, eOne Television International.
Fraser joined eOne in 2008 after the UK-listed producer and distributor acquired Oasis International. She has led eOne’s sales and acquisitions activities across the TV division.
The company sells shows including Haven, Hell on Wheels, Rookie Blue and zombie hit series The Walking Dead, which is on FIC channels around the world. Its kids line-up includes Peppa Pig. It is also seeking move more heavily into factual and fact-ent content.
Fox is set to announce she is joining its growing international channels business. It is understood she will oversee international sales of entertainment content for FIC.
In a statement eOne said: “The company wishes to thank Fraser for her countless contributions and leadership”.
Baxter is expected to reshape the TV division in the wake of recent changes with eOne now a sizable TV and film producer and distributor. Earlier this year it completed a change in its UK listing to increase its profile. The company reported annual revenue of £629.1 (US$956.8 million) million in May, compared with £502.7 million a year earlier.
UPDATE: 7.24pm GMT, August 6: Fox International Channels has confirmed Fraser will become senior VP, global entertainment sales, a newly-created, London-based position.