Thomas Madsen-Mygdal
Prime Minister of Denmark
In office 14 December 1926 – 30 April 1929
Monarch	Christian X
Preceded by	Thorvald Stauning
Succeeded by	Thorvald Stauning
Minister for Agriculture
In office 14 December 1926 – 30 April 1929
Prime Minister	Himself
Preceded by	Kristen Bording
Succeeded by	Kristen Bording
In office 5 May 1920 – 23 April 1924
Prime Minister	Niels Neergaard
Preceded by	Christian Sonne
Succeeded by	Kristen Bording
Personal details
Born	(1876-12-24)24 December 1876 Mygdal, Hjørring, Denmark
Died	23 February 1943(1943-02-23) (aged 66) Copenhagen, Denmark
Political party	Venstre

Thomas Madsen-Mygdal (24 December 1876 – 23 February 1943) was a Danish politician from Venstre who served as the prime minister of Denmark from 1926 to 1929. He was also minister for agriculture from 1920 to 1924 and again while concurrently being prime minister.

Madsen-Mygdal was born in Mygdal, Vendsyssel, the son of landstingsmand, statsrevisor N.P. Madsen-Mygdal (1835-1913) and Ane Kirstine Jacobsen (1839–1902). He became a teacher from Jelling Seminarium but later studied agriculture.

Thomas Madsen-Mygdal was a self-taught farmer, and was also Minister of Agriculture while he was Prime Minister, as he had also been in the Cabinet of Neergaard.

His government had the parliamentary support of the Conservative People's Party, but he lost their support in 1929 when the Conservative People's Party was not satisfied with the resources allocated to the military in the budget. Having lost his parliamentary support on this important issue, new elections were held, and the Social Democrats and the Danish Social Liberal Party came into power.

The University of Aarhus was founded under his government.

Madsen-Mygdal married Marie Deichmann, née Rovsing (27 December 1885 - 15 December 1955) on 15 November 1907 in Gentofte. He owned Edelgave from 1921 and until his death. His widow kept the estate until her death in 1955.

• Kristian Hvidt, Statsministre i Danmark fra 1913 til 1995 (1995)