Löjtnant (English: Lieutenant in the Swedish Army/Air Force, Sub-lieutenant in the Navy) is a company grade officer rank.

The rank of löjtnant (lieutenant) appears for the first time during the latter part of the Middle Ages.

A lieutenant in the army serves in two areas, as commander and as a staff officer in a battalion (or brigade).

As a commander, a lieutenant mainly serves as a platoon leader both in the war organization and in basic training of units.

A lieutenant should be able to work as a “first-line commander”, to be able to lead education, practice and training and to be able to supervise colleagues within one's own area of competence.

The army emphasizes that the lieutenant must be competent in supervising younger colleagues and lead platoon combat training.

[5] According to Chapter 2, Section 1 of FFS 2018:7, a person who is eligible for promotion has served in the Swedish Armed Forces to such an extent that assessment of suitability, knowledge and skills could be carried out, is deemed suitable for promotion, possesses the knowledge and skills required for the higher rank, and meets time requirements according to Section 2 (must have held the rank for at least two years).

The rank of löjtnant (sub-lieutenant) appears for the first time during the latter part of the Middle Ages.

[4] According to Chapter 2, Section 1 of FFS 2018:7, a person who is eligible for promotion has served in the Swedish Armed Forces to such an extent that assessment of suitability, knowledge and skills could be carried out, is deemed suitable for promotion, possesses the knowledge and skills required for the higher rank, and meets time requirements according to Section 2 (must have held the rank for at least two years).

The wowen shoulder mark (AXELKLAFFSHYLSA M/02 INVÄVD KAPTEN FLOTTAN) is worn on the naval combat dress (sjöstridsdräkt m/93), duty uniform (arbetsdräkt m/87 (blå)) and combat uniform (Fältuniform m/90 lätt, m/90 lätt blå, m/90 tropik (green, beige and blue)).

A sub-lieutenant wears a peaked cap (skärmmössa m/48) which is fitted with a hat badge (mössmärke m/78 off för flottan) and with a lacing in form of a golden thread (mössnodd m/82).

[15] A sub-lieutenant wears epaulette's (epålett m/1878) to white tie (frack m/1878) and to coat (rock m/1878).