Ansari, Siamak (born 1968, Tehran) Siamak Ansari has a degree in Theater and Television from Islamic Azad University. In 1995, when he was working in advertisement industry, one of his friends invited him to act in Rasoul Mollaqolipour's 'A Trip to Chazabeh'. Ansari is mostly known for his roles in Mehran Modiri's comedy series such as 'Tiptoe' (2002), 'Dotted Line' (2003-2004), 'The Grand Prize' (2005), 'Barareh Nights' (2005), 'Mozaffar’s Garden' (2006), 'The Man of a Thousand Faces' (2007), 'The Man of Two Thousand Faces' (2008), 'Bitter Coffee' (2009), 'My Villa' (2012), 'I'm Just Kidding' (2013), and 'In Hashieh' (2014-2015).
| Series | Signal Mowjud Ast | 2026 | |
| Series | Roozegare Javani | 2026 | |
| Series | Elclasico | 2025-03-26 | |
| Series | NoteBook | 2023-11-17 | |
| Series | Women’s Secret Network | 2022-07-29 | |
| Movie | A Minor | 2022-04-27 | |
| Series | Joker | 2021-11-27 | |
| Movie | Bright House | 2021-02-03 | |
| Movie | Khoon Shod | 2020-02-01 | |
| Series | 021 | 2020-10-28 | |
| Series | Hamrefigh | 2020-12-10 | |
| Movie | Snake Venom | Heshmat | 2019-06-19 |
| Movie | Maybe it isn't Love | 2019-01-16 | |
| Movie | Pig | Homayoun - The Tennis Partner | 2018-04-19 |
| Movie | Bomb: A Love Story | Daneshpasand | 2018-02-20 |
| Series | Golshifteh | Foad Afshar | 2018-02-28 |
| Movie | Khargiush | babak | 2018-03-19 |
| Movie | 5 PM | 2017-07-21 | |
| Movie | Dracula | 2016-06-10 | |
| Movie | 50 Kilos of Sour Cherry | 2016-03-16 | |
| Series | Dorehami | Peyman | 2016-03-18 |
| Series | Sneeze | 2015-08-03 | |
| Series | At Margin | Dr. Hooman Sahraei | 2015-03-26 |
| Movie | Lady | 2014-02-01 | |
| Series | I'm just kidding | 2014-01-21 | |
| Series | My Villa | Hedayat | 2013-01-22 |
| Movie | Crime | Fattah | 2011-05-24 |
| Series | Bitter Coffee | Mostashar-ol-Molk / Nima Zand-Karimi | 2010-09-13 |
| Movie | Poverty | 2009-01-13 | |
| Series | The Man with a Thousand Faces | Dr. Tabibian Jr | 2008-03-20 |
| Movie | Invitation | Ali | 2008-09-10 |
| Series | Astronauts on their way to the World Cup | 2006-06-18 | |
| Series | Great Award | Mahmoud Jamali | 2005-03-21 |
| Series | Barareh Nights | Kiyanoosh Esteghrarzadeh/Shir Kianoosh Barareh | 2005-10-25 |
| Movie | Tickle | 2005-06-15 | |
| Series | Dotted | Kourosh | 2003-09-10 |
| Series | On Tiptoes | Sepehr Mahtabi | 2002-08-21 |
| Movie | Sweet Jam | 2001-04-19 | |
| Movie | The Afflicted Generation | 2000-01-01 | |
| Series | Hotel | Homayoun | 1999-01-01 |
| Movie | Help Me | 1997-04-01 | |
| Movie | Journey to Chazzabeh | 1996-02-01 |