N.M. Perera
Nanayakkarapathirage Martin Perera, commonly known as Dr. N. M. Perera (Sinhala එන්.එම්.පෙරේරා ; 6 June 1904 – 14 August 1979), was one of the founding leader of the Sri Lankan Trotskyist Lanka Sama Samaja Party (LSSP). He was also the first Trotskyist politician to become a cabinet minister. He served two terms as Minister of Finance and Leader of the Opposition.  He also served one term as the Mayor of Colombo.