Nikolaos Plastiras (; November 4, 1883 – July 26, 1953) was a
Greek general and politician, who served thrice as
Prime Minister of Greece. A distinguished soldier and known for his personal bravery, he was known as "The Black Rider" during the
Greco-Turkish War of 1919-1922. After the Greek defeat in the war, along with other
Venizelist officers he staged a coup against King
Constantine I of Greece and his government. The military-led government ruled until January 1924, when power was handed over to an elected National Assembly, which later declared the
Second Hellenic Republic. In the
interwar period, Plastiras remained a devoted Venizelist and republican. Trying to avert the rise of the royalist
People's Party and the restoration of the monarchy, he led two coup attempts in 1933 and 1935, both of which failed, forcing him to exile in
France.