Alistair or Alastair Campbell may refer to:
- Alastair Campbell (athlete) (1890–1943), English cricketer and footballer
- Alistair Campbell (academic) (1907–1974), Rawlinson and Bosworth Professor of Anglo-Saxon at the University of Oxford
- Alistair Te Ariki Campbell (1925–2009), New Zealand poet, playwright, and novelist
- Alastair Campbell (bioethicist) (born 1938), British bioethicist
- Alastair Campbell, Lord Bracadale (born 1949), Scottish jurist
- Alastair Campbell, 4th Baron Colgrain (born 1951), British hereditary peer
- Alastair Campbell (born 1957), British political aide and Labour Party strategist associated with Tony Blair
- Ali Campbell (Alistair Ian Campbell, born 1959), British singer formerly with UB40
- Alistair Campbell (cricketer) (born 1972), Zimbabwean test cricketer