Charles Saatchi (born 9 June 1943) (Arabic: تشارلز ساعاتجي‎) was the co-founder with his brother Maurice of the global advertising agency Saatchi & Saatchi, leading the world's largest agency until they were forced out in 1995. In the same year the Saatchi brothers formed a new agency called M&C Saatchi.

Many large clients followed, and their new agency quickly overtook their former agency in Britain's top ten. Charles is also known worldwide as an art collector and owner of the Saatchi Gallery, and in particular for his sponsorship of the Young British Artists (YBAs), including Damien Hirst and Tracey Emin.

Charles Saatchi was born into an Iraqi Jewish family in Baghdad, Iraq ("Saatchi" means "clockmaker", from the Arabic ساعة sāعaħ, clock, and the originally Turkish craftsman's suffix جي -jī, here transliterated chi). The family moved to Hampstead, London, when he was four and he attended Christ's College, a secondary school in North London. During this time he developed an obsession with US pop culture, including the music of Elvis Presley, Little Richard and Chuck Berry. He also manifested his enthusiasm for collections, building up from Superman comics to jukeboxes. He has described as "life changing" the experience of viewing a Jackson Pollock painting at the Museum of Modern Art in New York. He then progressed to study at the London College of Communication.