Sezai Temelli (born 1963) is a Turkish politician, the chairman of the Peoples' Democratic Party (HDP) in Turkey, since 11 February 2018 alongside chairwoman Pervin Buldan.
He was previously a Member of Parliament for Istanbul's second electoral district from June to November 2015.
Before becoming chairman of the HDP in the party's 3rd ordinary congress, he was a deputy chairman responsible for economic policy.