For the city, see: Bruthar Sergi Bromwin (city).

Bruthar Sergi Bromwin (14 August 1788 - 1 January 1832) was a Ostrobian nationalist and a polymath during the end of the British colonial period. A doctor by profession, Bromwin became a writer and a key member of the Propaganda Movement which advocated for political reforms and freedoms for the colony. He was executed by the British colonial government for the crimes of rebellion after the Sparrow Revolution. He wrote poems and stories of the independence of Ostrobia. The most famous of them: Bruthars Last Goodbye was writen 20 hours before his execution. He is considered an Ostrobian national hero and a symbol of Ostrobian nationalism.