Bernays is a surname. Notable people with the surname include:
Adolphus Bernays (1795–1864), professor of German in London; brother of Isaac Bernays and father of:
Lewis Adolphus Bernays (1831–1908), public servant and agricultural writer in Australia; son of Adolphus Bernays
Edward Bernays (1891–1995), the "father of public relations"; great-grandson of Isaac Bernays and father of:
Anne Bernays (born 1930), American novelist; daughter of Edward Bernays and American novelist Doris E. Fleischman
Isaac Bernays (1792–1849), German rabbi; brother of Adolphus Bernays and father of:
Jakob Bernays (1824–1881), German classical linguist
Michael Bernays (1834–1897), German literature historian
Karl Ludwig Bernays (1815—1876), Marxist journalist
Martha Bernays (1861–1951), wife of Sigmund Freud; granddaughter of Isaac Bernays by his son Berman
Paul Bernays (1888–1977), Swiss mathematician born in London; great-grandson of Isaac Bernays
Robert Bernays (1902–1945), Liberal MP; great-grandson of Adolphus Bernays