Michael Halliday (1925–2018) was a British linguist.
Michael Halliday may also refer to:
- Michael Frederick Halliday (1822–1869), English amateur artist
- Michael Halliday (cricketer) (born 1948), Irish former cricketer
- Michael Halliday (footballer) (born 1979), footballer from Northern Ireland
- Michael Halliday (soccer) (born 2003), American soccer player
- Pseudonym of John Creasey (1908–1973), English crime and science fiction writer