Urho Jonas Castrén (30 December 1886, in Jyväskylä – 8 March 1965, in Helsinki) was a judge, serving for 27 years as the President of the Supreme Administrative Court of Finland. During the constitutional crisis of 1944, Castrén, representing the National Coalition Party, became Prime Minister of Finland for a brief period.
|18th Prime Minister of Finland|
21 September 1944 – 17 November 1944
|President||C. G. E. Mannerheim|
|Preceded by||Antti Hackzell|
|Succeeded by||Juho K. Paasikivi|
|Minister of Justice|
31 December 1925 – 13 December 1926
|Prime Minister||Kyösti Kallio|
|Preceded by||Oskar Lilius|
|Succeeded by||Väinö Hakkila|
Urho Jonas Castrén
30 December 1886
Jyväskylä, Grand Duchy of Finland, Russian Empire
|Died||8 March 1965 (aged 78)|
|Political party||National Coalition|
Urho Jonas Castrén was born 30 December 1886, in Jyväskylä to Johannes Castrén and Amanda Ulrika Jussilainen. He attended the Lyceum of Jyväskylä, completing his studies of the classics in 1904 and earning a legal degree in 1907. He took his Master of Laws in 1910 and obtained a degree in rights in 1912. Between 1918 and 1927 he taught at the Agriculture and Forestry division and Political Science Department of the Faculty of Law at the University of Helsinki as a specialty teacher.
He joined the law firm of Jonas Castrén and worked as an assistant from 1913 to 1914. In 1914, he became a legal counselor and a member of the Helsinki City Court, where he remained until 1917 when he transferred to the Residential Tax Assessor's office. He served on the assessor's Board of Directors between 1917 and 1922. Castrén entered the judiciary in 1922 first serving as Saarijärven judicial district judge until 1926, then as Deputy Chancellor of Justice between 1926 and 1928; Chancellor of Justice from 1928 to 1929; and finally as President of the Supreme Administrative Court from 1929 to 1956.
- "Castrén, Urho (1886 - 1965)". Kansallisbiografia (in Finnish). Helsinki, Finland: Kansallisbiografia. Retrieved 16 July 2015.
- "Ministerikortisto". Valtioneuvosto.
- "Castrén, Urho Joonas". arkisto (in Finnish). Finland: Porvarillisen Työn Arkisto. Retrieved 16 July 2015.
- "Historia – Oikeuskanslerinvirasto". www.okv.fi.
- "Council of State - Ministers of Justice". Valtioneuvosto.fi. Retrieved 27 December 2017.