Halliday or Haliday is a surname. Notable people with the surname include:
Alexander Henry Haliday (1807–1870), Irish entomologistAndrew Halliday (journalist) (1830–1877), British journalist and dramatistAndrew Halliday (physician) (1782–1839), Scottish physician, reformer, and writerAndy Halliday (born 1991), Scottish footballerBilly Halliday (1906 – after 1933), Scottish footballerBrad Halliday (born 1995), English professional footballerBrett Halliday (1904–1977), pen name of American mystery author Davis DresserBryant Haliday (1928–1996), American actorCharles Haliday (1789–1866), Irish historian and antiquaryDave Halliday (1901–1970), Scottish footballerDavid Halliday (physicist) (1916–2010), American physicist and textbook authorDenis Halliday (born c. 1941), former United Nations Humanitarian Co-ordinator in IraqEbby Halliday (born 1911), American realtorEugene Halliday (1911–1987), artist, philosopher and spiritual teacherF. E. Halliday (1903–1982), English academic and authorFred Halliday (1946–2010), Middle East scholarFrederick James Halliday (1806–1901), first Lieutenant-Governor of BengalGabriel Soprinye Halliday (born 1988), aka Slim Burna, pop singer and record producerJack Halliday (1926–2000), American football playerJames Halliday (Canadian politician) (1845–1921), in the Canadian House of Commons from 1901 to 1904James Halliday (weightlifter) (1918–2007), British weightlifterJames Halliday (wine) (born 1938), Australian wine critic and writerJimmy Halliday (1927–2013), leader of the Scottish National Party (1956–1960)John Halliday (actor) (1880–1947), American actorJohn Halliday (ophthalmologist) (1871–1946), Australian doctorJohn Halliday (footballer) (born 1880), English professional footballerJon Halliday, Irish historian and co-author of the book Mao: the Unknown StoryLin Halliday (1936–2000), American saxophonistMatt Halliday (born 1979), New Zealand race car driverMark Halliday (born 1949), American poetMartin Halliday (1926–2008), British neurophysiologistMichael Halliday (born 1925), linguistMichael Halliday (footballer) (born 1979), footballer from Northern IrelandSimon Halliday (born 1960), English rugby union playerTommy Halliday (born 1940), Scottish football playerToni Halliday (born 1964), English vocalist, lyricist and occasional guitarist of the band CurveWilliam Reginald Halliday (1886–1966), historian and archaeologist