Birger Ljungberg

{{Infobox officeholder

| image= 200px

| office= Minister of Defence

| term_start= 22 December 1939

| term_end= 20 March 1942{{cite web | url= https://www.regjeringen.no/no/om-regjeringa/tidligere-regjeringer-og-historie/sok-i-regjeringer-siden-1814/historiske-regjeringer/norske-regjeringer-1940-1945/johan-nygaardsvolds-regjering/id438691/?expand=factboxRegjeringsmedlemmer | title= Johan Nygaardsvold's Cabinet | publisher= Government.no | date= 10 July 2020 | accessdate= 10 July 2020 | language= Norwegian}}

| primeminister= Johan Nygaardsvold

| predecessor= Fredrik Monsen

| successor= Oscar Torp

| birth_date= {{birth date|1884|6|7|df=y}}

| birth_place= Kråkerøy, Fredrikstad, Østfold, Sweden-Norway

| death_date= {{Death date and age|1967|4|20|1884|6|7|df=y}}

| death_place= Fredrikstad, Østfold, Norway

| spouse= {{marriage|Beate Konow Søeberg|January 14, 1928}}

| party= Conservative

}}

Birger Ljungberg (7 June 1884 – 20 April 1967) was a Norwegian military officer and politician from the Conservative Party who served as Minister of Defence from 1939–1942.{{cite encyclopedia|title=Birger Ljungberg |encyclopedia=Norsk biografisk leksikon|first=Ole Kristian |last=Grimnes |authorlink=Ole Kristian Grimnes |editor=Helle, Knut |editor-link=Knut Helle |publisher=Kunnskapsforlaget |location=Oslo |url=http://nbl.snl.no/Birger_Ljungberg/utdypning |language=Norwegian |accessdate=11 September 2013}}{{cite encyclopedia|title=Birger Ljungberg |first= |last= |encyclopedia=Store norske leksikon |editor-last=Godal | editor-first=Anne Marit | editor-link=Anne Marit Godal |publisher=Norsk nettleksikon |location=Oslo |url=http://snl.no/Birger_Ljungberg |language=Norwegian|accessdate=11 September 2013}}

Ljungberg was criticized for his actions at the beginning of the Norwegian campaign, the German invasion of Norway, when he did not ensure the rest of the cabinet knew that an ordered partial mobilization would go out in secret, without a public declaration, and slowly by post.{{cite encyclopedia |first=Lars|last=Borgersrud|author-link=Lars Borgersrud|encyclopedia=Norsk krigsleksikon 1940–45 |title=Ljungberg, Birger |editor=Dahl |editor2=Hjeltnes |editor3=Nøkleby |editor4=Ringdal |editor5=Sørensen |url=http://urn.nb.no/URN:NBN:no-nb_digibok_2010113005006 |year=1995 |publisher=Cappelen |location=Oslo|isbn=82-02-14138-9|pages=250|language=no}}{{cite encyclopedia|first=Arnfinn|last=Moland|author-link=Arnfinn Moland|encyclopedia=Norsk krigsleksikon 1940–45 |title=mobiliseringen i 1940|editor=Dahl |editor2=Hjeltnes |editor3=Nøkleby |editor4=Ringdal |editor5=Sørensen |url=http://urn.nb.no/URN:NBN:no-nb_digibok_2010113005006 |year=1995 |publisher=Cappelen|location=Oslo|isbn=82-02-14138-9|pages=274–275|language=no}}{{cite encyclopedia|first=Lars|last=Borgersrud |author-link=Lars Borgersrud|encyclopedia=Norsk krigsleksikon 1940–45 |title=stille mobilisering|editor=Dahl |editor2=Hjeltnes |editor3=Nøkleby |editor4=Ringdal |editor5=Sørensen |url=http://urn.nb.no/URN:NBN:no-nb_digibok_2010113005006 |year=1995 |publisher=Cappelen |location=Oslo|isbn=82-02-14138-9|pages=399–400|language=no}}