Platon, born Paul Kulbusch (also spelled Kuhlbusch or Kuldbush; 25 July [O.S. 13 July] 1869 – 14 January 1919) was an Estonian bishop and the first Orthodox saint of Estonian ethnicity.
Paul Kulbusch was born on 25 July [O.S. 13 July] 1869 in Pootsi, Pärnumaa, in the southwest of present-day Estonia (then part of Imperial Russia). Kulbusch graduated in 1894 from the St. Petersburg Theological Academy with a master's degree and soon became a priest at the Estonian Orthodox Church of Saint Isidore in St. Petersburg, where he oversaw the expansion of church institutions and buildings and actively reached out to the Anglican church.
In 1917 a plenary council in Riga elected Kulbusch to be bishop of Reval (modern Tallinn, then a vicariate of the Riga diocese). He was consecrated as Bishop Platon on 31 December 1917. It was a tumultuous time. World War I was raging on, Russia's emperor had been overthrown, and Estonia yearned for independence, which Platon staunchly supported. Under the threat of German invasion, Russian troops withdrew from Estonia, enabling the declaration of Estonian independence on 24 February 1918, only to be ended by German occupation days later. During the occupation Platon traveled extensively through Estonia, visiting parishes by horse.