Cockcroft or Cockroft is a surname. Notable people with the surname include::
Cockcroft:
- Sir John Douglas Cockcroft (1897–1967), British nuclear physicist
- Colin Cockcroft (1918–1987), South African military commander
- Barry Cockcroft (1933–2001), British television documentary director
- Barry Cockcroft (dentist), Chief Dental Officer (CDO) for England
- George Cockcroft (born 1932), U.S. novelist who published under the name "Luke Rhinehart"
- John Hoyle Cockcroft (born 1934), British Conservative politician
- The Cockcroft Institute, a UK research centre for accelerator physics named after Sir John D. Cockcroft
- Cockcroft, a lunar crater named after Sir John D. Cockcroft
- William Cockcroft
Cockroft:
- Don Cockroft American football player
- Hannah Cockroft (born 1992), British athlete, won Paralympics gold medal
- Lana Coc-Kroft New Zealand television personality
- Peter Cockroft British weather forecaster
- Joe Cockroft English footballer
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