Shania Twain, (born Eilleen Regina Edwards; August 28, 1965) is a Canadian country pop singer-songwriter.

Shania Twain was born Eilleen Regina Edwards in Windsor, Ontario, daughter of Sharon and Clarence Edwards. Her parents divorced when she was two and her mother then moved to Timmins, Ontario with Eilleen and her sisters Jill and Carrie Ann. Sharon married Jerry Twain, an Ojibwa, and they had a son together, Mark. Jerry adopted the girls, legally changing their last name to Twain. When Mark was still in diapers, the Twains adopted Jerry's baby nephew, Darryl, after Darryl's mother died. Because of her connection to her stepfather, in the past, people had presumed Twain's ancestry was Ojibwa, but she stated in an interview that her biological father was part Cree. 

Through her maternal grandfather, she is a descendant of Zacharie Cloutier. Her maternal grandmother, Eileen Pearce, emigrated from Newbridge, Kildare, Ireland.

Twain's self-titled debut album was released in 1993 in North America and garnered her audiences outside Canada. The album only reached No.67 on the US Country Albums Chart, but it gained positive reviews from critics. 

The album failed to sell significant copies initially, although Twain's future success generated enough interest for the album to be certified platinum six years later by the RIAA, denoting sales of over a million. 

The album yielded two minor hit singles in the United States with "What Made You Say That" and "Dance with the One That Brought You". 

The album was more successful in Europe, where Twain won Country Music Television Europe's "Rising Video Star of the Year" award.

Her 1995 album The Woman in Me brought her fame, and her 1997 album Come On Over became the best-selling studio album of all time by a female act in any genre, the best-selling country album of all time, and the second best-selling overall album by a female act after Whitney Houston's "The Bodyguard" soundtrack album. Come On Over has sold more than 40 million copies worldwide. Her fourth album, Up!, was released in November 2002. To date it has sold 20 million copies worldwide.

Twain joined Canadian singer Anne Murray on the song "You Needed Me" on Murray's Anne Murray Duets: Friends and Legends album released November 13, 2007 in Canada, and on January 15, 2008 in the U.S.

Twain married music producer Robert John "Mutt" Lange on December 28, 1993, and they have a son, Eja (pronounced "Asia") D'Angelo, who was born on August 12, 2001. On May 15, 2008, a spokesperson for Mercury Nashville announced that Twain and Lange were separating after Lange allegedly had an affair with Twain's best friend, Marie-Anne Thiébaud. Their divorce was finalized on June 9, 2010. On December 20, 2010, Twain's manager confirmed that Twain was engaged to Swiss Frédéric Thiébaud (the ex-husband of her former best friend), an executive at Nestlé. They married on January 1, 2011 in Rincón, Puerto Rico.

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