Major General Pehr David Albert Janse (31 January 1893 – 2 October 1961) was a Swedish Army officer.

[1] Janse was commissioned as underlöjtnant in the Scanian Dragoon Regiment (Skånska dragonregementet, K 6) in 1913 and lieutenant in the Swedish Army in 1918, and in 1926, after completing the Royal Swedish Army Staff College and completing the post of aspirant, became captain of the General Staff.

[1] In 1941, Janse became regimental commander of Gotland Infantry Regiment (I 18), and took up the newly created position as Inspector of the Swedish Armoured Troops in 1942 and was appointed acting military commander of the IV Military District in 1945.

[2] Janse was from 1943 editor of the military-technical journal Pansar ("Armour") (from 1945 Pansar-Teknik-Underhåll, "Armour-Technology-Maintenance").

From 1947 he was chairman of the Föreningen för befrämjande av skolungdomens vapenövningar ("Association for the Promoting of the School Youth's Weapons Exercises").