Olivia Wilde (born Olivia Jane Cockburn;  /ˈkoʊbərn/; March 10, 1984) is an actress and fashion model. Born in the United States, she has both Irish and American citizenship. Wilde began acting in the early 2000s, and has since appeared in a number of television and film productions, including her roles in the dramas The O.C., The Black Donnellys, and House M.D., and had starring roles in films Tron: Legacy, Cowboys & Aliens, and In Time.

Wilde was born in New York City. Her mother, Leslie Cockburn (née Redlich), is an American-born 60 Minutes producer and journalist. Her father, Andrew Myles Cockburn, a journalist, was born in London, England, to British parents, and raised in Ireland; her uncles Alexander Cockburn and Patrick Cockburn are also journalists. Her older sister, Chloe Cockburn, is a civil rights attorney in New York; her aunt, Sarah Caudwell, was a writer, and her paternal grandfather, Claud Cockburn, was a novelist and journalist.

Her father's upper-class British ancestors lived in several countries during the height of colonialism and the British Empire, including Peking, China (where her paternal grandfather was born), Calcutta and Bombay, India, Cairo, Egypt, and Tasmania, Australia (one of her paternal great-great-grandfathers, Henry Arthur Blake, was Governor of Hong Kong). Wilde's father's ancestors include abolitionist and Anglican minister James Ramsay, politician George Arbuthnot, lawyer, judge, and literary figure Henry Cockburn, Lord Cockburn, Lord Provost of Edinburgh Sir William Arbuthnot, 1st Baronet, and Sir Thomas Osborne, 9th Baronet. Wilde's ancestry consists of English, Scottish, Irish, and German.