|Minister of Education, Eastern Province|
3 March 2015
|Leader of the Opposition, Eastern Provincial Council|
28 September 2012 – 3 March 2015
|Member of the Eastern Provincial Council for Trincomalee District|
|Born||7 August 1950|
|Political party||Illankai Tamil Arasu Kachchi|
|Tamil National Alliance|
|Alma mater||R. K. M. Sri Koneswara Vidyalayam|
|Ethnicity||Sri Lankan Tamil|
Thandayuthapani was a school principal before becoming a Director of Education and Additional Director of Education. He served as Secretary to the Ministry of Lands, Land Development, Education and Culture (Eastern Province) between 2010 and 2011.
Thandayuthapani contested the 2012 provincial council election as one of the Tamil National Alliance's candidates in Trincomalee District and was elected to the Eastern Provincial Council (EPC). On 28 September 2012 the TNA leadership unanimously selected Thandayuthapani to be the Leader of the Opposition on the EPC. Thandayuthapani and the other newly elected TNA provincial councillors took their oaths on 28 September 2012 in front of TNA leader and Member of Parliament R. Sampanthan.
Following the 2015 presidential election an all party provincial government was formed in the Eastern Province. Thandayuthapani took his oath as Minister of Education in front of Governor Austin Fernando on 3 March 2015.
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- Somarathna, Rasika (5 March 2015). "'EPC power sharing similar to experimental unity govt'". Daily News (Sri Lanka). Archived from the original on 2 April 2015.
- Balachandran, P. K. (17 February 2015). "For The First Time in History, TNA Will Be in Eastern Province' Board of Ministers". The New Indian Express.
- Thambiah, Mirudhula (24 February 2015). "SLMC - TNA marriage in the East". Ceylon Today. Archived from the original on 27 February 2015.
- Panchalingam, Ariram (3 March 2015). "New Eastern Provincial Council Ministers sworn in". News First.
- "Eastern PC Ministers sworn in". Hiru News. 3 March 2015.