Upper Norrland Military District (Swedish: Övre Norrlands militärområde, Milo ÖN), originally VI Military District (Swedish: VI.

militärområdet) was a Swedish military district, a command of the Swedish Armed Forces that had operational control over Upper Norrland, for most time of its existence corresponding to the area covered by the counties of Västerbotten and Norrbotten.

Milo ÖN was created in 1966 along with five other military districts as part of a reorganisation of the administrative divisions of the Swedish Armed Forces.

The military district consisted of the land covered by the above-mentioned counties.

Blazon: "Azur, an erect sword with the district letter (ÖN - Upper Norrland) surrounded by an open chaplet of oak leaves, all or.