Rebecca P. Mark-Jusbasche (born August 13, 1954, Kirksville, Missouri), known during her international business career as Rebecca Mark, is best known as the former head of Enron International, a subsidiary of Enron. She was also CEO of Azurix Corp., a publicly traded water services company originally developed by Enron International. Mark was promoted to Vice Chairman of Enron in 1998 and was a member of its board of directors. She resigned from Enron in August 2000.