Levinsohn, who was internet division president for Fox Interactive Media, is to be replaced by his cousin, Peter Levinsohn, who is currently president of Fox Entertainment digital media.
Ross Levinsohn, who was made president of Fox Interactive Media in August 2005, was instrumental in News Corp's digital buying spree which included MySpace, the IGN Entertainment network and film review site Rottentomatoes.com.
There are currently no details on the circumstances of Levinsohn's departure, but he said: "It has been incredibly exciting to be part of something that's pioneering a new way for people to live their lives on the web. I realise there are incredible opportunities in the marketplace and I look forward to my next venture."
His departure follows that of Fox Interactive Media's chief operating officer Mark Jung, who left earlier this month after just nine months.
Prior to becoming head of Fox Interactive Media, Levinsohn was a manager in 20th Century Fox's international theatrical division.
His cousin Peter is an 18-year News Corp veteran. He has been president of digital media at Fox Entertainment Group since 2004, where he helped mastermind digital revenue-sharing agreements across Fox's TV network.
Peter Chernin, chief operating officer at News Corp, said: "Peter's adept leadership, keen knowledge of the complexities of the digital space and ability to work skilfully across multiple business lines makes him the ideal person to lead this important asset."
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