People magazine reports Victoria White O'Gara, 43, has filed the documents needed to end her marriage to Evans, 75, after less than a year together.
Evans, who headed Paramount Studios from 1966 to 1974, has had six previous marriages end in divorce with wives ranging from actress Sharon Hugueny to former Versace model Leslie Ann Woodward.
O'Gara has been divorced once and is the widow of multimillionaire Lord Gordon White, who was worth over $400 million when he died in 1995, the magazine said.
Due to her significant wealth, O'Hara has petitioned for a repeal of the divorce court's ability to award Evans any spousal support.
2014: The Year in Fashion [PHOTOS]
Mindy Kaling mistaken for Malala Yousafzai