Maggie Wilderotter (born Mary Agnes Sullivan; February 9, 1955) is an American businessperson who is the chairwoman of DocuSign (as well as interim CEO from April to October 2022) and the former chief executive officer of Frontier Communications, from November 2004 to April 2015; then executive chairman of the company until April 2016. During her tenure with Frontier, the company grew from a regional telephone company with customer revenues of less than $3 billion to a national broadband, voice and video provider with operations in 29 states and annualized revenues in excess of $10 billion.