Teo Kok Seong (张聒翔) is a Malaysian politician of Chinese descent. He is currently the Member of Parliament from Rasah in Negeri Sembilan. He joined the Democratic Action Party (DAP) in 2002 and subsequently became its youth chief. In March 2015, he was arrested for his involvement in the "Kita Lawan" rally.
Election results
| Year | Constituency | Opposition | Votes | Pct | Government | Votes | Pct | Ballots cast | Majority | Turnout |
|---|
| 2008 | N08 Bahau, P127 Jempol | | Teo Kok Seong (DAP) | 6,188 | 52.24% | | Lim Fui Ming (MCA) | 5,351 | 45.17% | 11,846 | 837 | 72.84% |
| 2018 | | Teo Kok Seong (DAP) | 10,094 | 64.74% | | Chong Wan Yu (MCA) | 3,985 | 25.56% | 15,591 | 6,109 | 81.11% |
| Mustafar Bakri Abdul Aziz (PAS) | 1,512 | 9.70% |
| Year | Constituency | Opposition | Votes | Pct | Government | Votes | Pct | Ballots cast | Majority | Turnout |
|---|
| 2013 | P130 Rasah, Negeri Sembilan | | Teo Kok Seong (DAP) | 48,964 | 65.77% | | Teo Eng Kian (MCA) | 25,479 | 34.23% | 75,860 | 23,485 | 85.81% |