Suppayya Paramu Thamilselvan, commonly known as S.
P.
Tamilselvan, (sometimes transcribed as "Tamilchelvan"),
was the leader of the political wing of the Liberation Tigers of Tamil Eelam, an organisation fighting for a separate state for the ethnic Tamil minority in northern Sri Lanka from majority Sinhalese government.
He was a prominent negotiator and one of the closest associates of LTTE leader Velupillai Prabhakaran.