Leigh Whannell is an Australian screenwriter, actor, film producer, and film director. He is best known for writing films directed by his friend James Wan, including Saw, Dead Silence and Insidious.
| Movie | Insidious: Chapter 3 | 2015 |
| Movie | Upgrade | 2018 |
| Movie | The Invisible Man | 2020 |
| Movie | Wolf Man | 2025 |
| Movie | Saw | 2004 |
| Movie | Saw | 2004 |
| Movie | Saw II | 2005 |
| Movie | Insidious | 2010 |
| Movie | Saw III | 2006 |
| Movie | Insidious: Chapter 2 | 2013 |
| Movie | Insidious: Chapter 2 | 2013 |
| Movie | Insidious: Chapter 2 | 2013 |
| Movie | Jigsaw | 2017 |
| Movie | Insidious: Chapter 3 | 2015 |
| Movie | Insidious: Chapter 3 | 2015 |
| Movie | Insidious: The Last Key | 2018 |
| Movie | Upgrade | 2018 |
| Movie | The Invisible Man | 2020 |
| Movie | Saw | 2003 |
| Movie | Dead Silence | 2007 |
| Movie | Saw Rebirth | 2005 |
| Movie | Home Shopper | 2018 |
| Movie | The Mule | 2014 |
| Movie | Cooties | 2014 |
| Movie | Cooties | 2014 |
| Movie | Saw II | 2005 |
| Movie | Saw IV | 2007 |
| Movie | Jigsaw | 2017 |
| Movie | Saw: The Final Chapter | 2010 |
| Movie | Insidious: The Last Key | 2018 |
| Movie | Upgrade | 2018 |
| Movie | Cooties | 2014 |
