Cat Deeley, full name Catherine Elizabeth Deeley, is a British television presenter born in Sutton Coldfield, Birmingham, England on 23 October 1976.

After achieving nine A grade GCSEs and four A-levels at school, Deeley became a full time model with the agency Storm, who also have the likes of Kate Moss on their books. It was at this stage she shortened her first name to Cat, apparently because there were too many Catherines on the agency's roster. Deeley left modelling after two years and became an MTV UK presenter in 1997. A year later she became co-host with Ant and Dec on the Saturday morning children's show SMTV Live, which she presented until 2002, the year after she won a Children's BAFTA award for Best Presenter. She continued to present spin-off music show CD:UK until 5 March 2005.

Other programmes she has hosted include Record Of The Year, Fame Academy, The Brit Awards 2004 and Stars in Their Eyes, as well as a weekly show on London's Capital FM and BBC Choice series Roadtripping both with former MTV colleague Edith Bowman. In 2003 she became patron of Great Ormond Street Hospital.

Renowned for her looks, Deeley has often appeared in 'sexiest women' lists and the like, and has posed for countless photo-shoots in men's and women's magazines. Once, in 1999, she casually mused in an interview that she would like to appear in a Playboy photo-shoot one day. When, in a separate FHM interview, she was asked to confirm in the plainest terms that she would pose completely nude for a photo-shoot if offered a million pounds, she replied unequivocally in the affirmative. To date, however, she has not.

Deeley once commented that the television personality she found most annoying was Vanessa Feltz, because she was heard talking about her private life too often.