
Frank, senior vice-president and managing director of ESPN for Europe, the Middle East and Africa, was instrumental in ESPN's high- profile entry into the UK and the purchase of the Premier League football rights from defunct sports broadcaster Setanta.
ESPN has begun the search for Frank's successor and she will continue to work at the company until she returns to her native California in September.
Frank said: "The past five years with ESPN, and 17 years in London, have been a remarkable and rewarding time. ESPN is as tremendous company, with tremendous people, and I am extremely proud of the team, business and connection to fans that we are building. My focus and energy over the coming months will be to continue to strengthen each of those aspects."
ESPN raised its profile as a sports broadcaster in the UK in June 2009, when it secured the rights to air 46 games for the current 2009/2010 season and 23 games in each of the next three seasons, following the demise of Setanta.
Russell Wolff, executive vice-president and managing director, ESPN International, said: "The UK, the Middle East and Africa have made dynamic progress under [Frank's] leadership, and her legacy with ESPN will be the vibrant and growing position we have established."
Earlier this month, Charly Classen, senior director of business development for EMEA at ESPN, took on the additional role of commercial director for the UK, as the sports broadcaster prepares to ramp up its London-based operations.