- Please see "lieutenant colonel" for other countries which use this rank
In the Canadian Forces, lieutenant-colonel (LCol, French: lieutenant-colonel or lcol) is a rank for officers who are in the Canadian Army or the Royal Canadian Air Force, equal to commander for officers who are in the Royal Canadian Navy. A lieutenant-colonel is the second-highest rank of senior officer. A lieutenant-colonel is senior to a major or lieutenant-commander, and junior to a colonel or naval captain.
The rank insignia for a lieutenant-colonel on air force uniforms is three 1‑cm stripes of braid, worn on the cuffs of the service-dress jacket, and on slip-ons on other uniforms. On army uniforms, the rank insignia is one pip and a crown.
Lieutenant-colonels are addressed by rank and name and thereafter by subordinates as "Sir" or "Ma'am".
In the Canadian Army, lieutenant-colonels are often employed as commanding officers of battalion-sized groups, such as infantry battalions, armoured regiments, artillery field regiments, engineer field regiments, signal regiments, field ambulances and service battalions.
CADPAT uniform (old insignia)
|NATO rank code||Student Officer||OF-1||OF-2||OF-3||OF-4||OF-5||OF-6
|Royal Canadian Navy||NCdt||A/SLt||SLt||Lt(N)||LCdr||Cdr||Capt(N)||Cmdre||RAdm||VAdm||Adm
|Canadian Army||OCdt||2Lt||Lt||Capt||Maj||LCol||Col||BGen||MGen||LGen||Gen||Not used|
|Royal Canadian Air Force||OCdt||2Lt||Lt||Capt||Maj||LCol||Col||BGen||MGen||LGen||Gen||Not used|