Yglesias is a surname. Notable people with the surname include:
The Yglesias literary and journalistic family Helen Yglesias (née Bassine) (1915–2008), American novelist, wife of Jose Jose Yglesias (1919–1995), American novelist, husband of Helen Rafael Yglesias (born 1954), American novelist and screenwriter, son of Jose and Helen Matthew Yglesias (born 1981), American journalist, son of Rafael Rafael Yglesias Castro (1861–1924), Costa Rican politician
See also Iglesias (surname)