The warrant officer rank also is utilized in the Canadian Forces. A warrant officer (abbreviated "WO") is a senior non-commissioned officer who ranks immediately above a sergeant and below a master warrant officer. As Canadian warrant officers do not hold a commission, they are not to be saluted.

The insignia for a warrant officer is a British Imperial Crown. Depending on the dress regulations, the insignia is worn on the upper arm (Army, combat uniforms only), on epaulets (overcoats, work-dress sweaters), at the base of the sleeve (dress tunics, work-dress jackets) or on collar pins (dress and work-dress uniform shirts).

In the Canadian Forces, a warrant officer is usually addressed simply as "Warrant" or "Warrant Bloggins," both by ranking and subordinate members. Traditionalist officers may use the more respectful "Mr. Bloggins" instead. In the Navy, the equivalent rank is Petty Officer, 1st Class (PO1); a PO1 is addressed as "Petty Officer," or simply "P.O.". In French, a warrant officer is called "un(e) adjudant(e)" and a PO1 is called "un(e) Matelot(e)-chef(e)". Prior to 1967, the equivalent army ranks were Staff Sergeant and Warrant Officer 3rd Class (WOIII).

Warrant officers usually hold an appointment, by whose name they may be addressed. Examples include Company Sergeant Major (CSM), Battery Sergeant Major or Pipe Major (sometimes 'Pipey').

SergeantCanadian Forces Ranks and InsigniaMaster Warrant Officer

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