In a statement, Brian Wright, client director of marketing communications at Wrigley, said: "BBDO, our long-standing agency of record, will continue as a key Wrigley advertising agency.
"We are currently now assessing how best to consolidate the remainder of our agency roster globally so that we can be more efficient, synergistic and faster to market with highly creative, integrated consumer communications campaigns."
The BBDO network has held the creative duties for 77 years. The Omnicom Group agency Energy BBDO holds the lead US account. In the UK, independent agency Bray Leino shares creative duties with BBDO network agency Abbot Mead Vickers.
In Australia and New Zealand, Omnicom's DDB holds the account. In Canada and parts of Asia Publicis Groupe's Leo Burnett is the incumbent, and WPP Group's Grey holds the account in Asia and India. All incumbents on the Wrigley's roster will be repitching.
Media planning and buying will be unaffected, duties are currently held by WPP's MindShare.
Wrigley's Extra is the second biggest confectionery brand in the UK. Included in the Wrigley's gum umbrella are Airwaves, Orbit, Juicy Fruit, Wrigley's Spearmint, Doublemint and Hubba Bubba bubblegum.
The company was founded in 1891 and has been publicly traded on the New York and Midwest Stock Exchanges since 1923. It first produced its founding brands more than 110 years ago. Today, Wrigley brands are sold in more than 180 countries.