Lieutenant-commander (Canada)

In the Royal Canadian Navy, the rank of lieutenant-commander (LCdr) (capitaine de corvette or capc) is the naval rank equal to major in the army or air force and is the first rank of senior officer. Lieutenant-commanders are senior to lieutenants (N) and to army and air force captains, and are junior to commanders and lieutenant-colonels.

Typical appointments for a lieutenant-commander include:
 * Commanding officer of a minor warship, submarine or reserve division.
 * Executive officer or head of department of a frigate, destroyer, supply ship, reserve division or training establishment.
 * Staff officer on a formation or task group headquarters staff.

The rank insignia for a lieutenant-commander is two ½-inch (13 mm) stripes with a ¼-inch (6.4 mm) stripe between, worn on the cuffs of the service dress jacket, and on slip-ons on other uniforms. As senior officers, they wear one row of gold oak leaves along the edge of the visor of their service caps. Lieutenant-commanders of the Naval Operations Branch wear the officer's pattern of the branch cap badge: an anchor on a black oval, surrounded by a wreath of maple leaves at the sides and base of the oval, the whole surmounted by the St Edward's Crown. Specialist officers in such branches as logistics, intelligence, medical, etc., wear their branch cap badges.

Prior to unification of the Canadian Forces in 1968, rank structure and insignia followed the British pattern. As part of the Canadian Naval Centennial the executive curl pattern of naval officer's rank was returned to all uniforms.