Chief of Staff may refer to the following positions in Canada:

Military

• Since 1964:
  • Chief of the Defence Staff (Canada), the senior officer of the combined Canadian armed forces
  • In the Armed Forces Council, various subordinate positions such as "Chief of Staff (Materiel)"
• Before 1964:
  • Chief of the General Staff (army) from 1904
  • Chief of the Naval Staff from 1928
  • Chief of the Air Staff from 1938
  • Chiefs of Staff Committee (Canada), from 1951 the above three plus a chairman

Other

• Chief of Staff to the Prime Minister (Canada), since 1987 the top official of the Prime Minister's Office