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Lawrence Jay Duplass Jr. (born March 7, 1973) is an American filmmaker, actor, and author widely known for his films The Puffy Chair (2005), Cyrus (2010), and Jeff, Who Lives at Home (2011), made in collaboration with his younger brother, Mark Duplass. Duplass starred in the Amazon Video comedy-drama series Transparent (2014–2019), and co-created the HBO comedy-drama series Togetherness (2015–16) and the HBO anthology series Room 104 (2017–2020).
| Year | Title | Credited as | ||
| Director | Writer | Producer | ||
| 2005 | The Puffy Chair | Yes | Yes | Uncredited |
| 2008 | Baghead | Yes | Yes | Yes |
| 2010 | Cyrus | Yes | Yes | No |
| 2011 | Jeff, Who Lives at Home | Yes | Yes | No |
| 2012 | The Do-Deca-Pentathlon | Yes | Yes | Yes |
| 2017 | Table 19 | No | Story | No |
| Outside In | No | Yes | Executive | |
| 2018 | Prospect | No | Yes | No |
| 2025 | The Baltimorons | Yes | Yes | Executive |
| TBA | See You When I See You | Yes | No | Executive |
| Year | Title | Credited as | Notes | ||
| Director | ExecutiveProducer | Writer | |||
| 2015–2016 | Togetherness | Yes | Yes | Yes | Co-creator |
| 2014 | Wedlock | No | Yes | No | |
| 2016–2018 | Animals. | No | Yes | No | |
| 2017–2020 | Room 104 | No | Yes | No | Co-creator |
| 2018 | Co-Ed | No | Yes | No | |
| Evil Genius | No | Yes | No | Documentary series | |
| Wild Wild Country | No | Yes | No | ||
| 2019 | On Tour with Asperger's Are Us | No | Yes | No | |
| Shook | No | Yes | No | ||
| 2020 | Search Party | Yes | No | No | Directed 2 episodes |
| 2021 | The Lady and the Dale | No | Yes | No | Documentary series |
| Sasquatch | No | Yes | No | ||
| Cinema Toast | Yes | Yes | Yes | Wrote & directed 1 episode | |
| 2024 | American Conspiracy: The Octopus Murders | No | Yes | No | Documentary series |
| Year | Title | Credited as | Notes | ||
| Director | Producer | Writer | |||
| 1996 | Connect 5 | No | Yes | No | |
| 2002 | The New Brad | Yes | Yes | Yes | |
| 2003 | This is John | Yes | No | No | |
| 2003 | Death for Sale | No | Yes | No | |
| 2004 | Scrapple | Yes | Yes | Yes | |
| 2005 | The Intervention | Yes | No | No | |
| 2011 | Kevin | Yes | Yes | Yes | Documentary short |
| Maurice | No | No | Executive | Documentary short | |
| Authoritative Sources | Yes | No | No | Segment of Slacker 2011 | |
| 2020 | The Ride | No | No | Executive | |
| Year | Title | Role | Notes |
| 2008 | Nights and Weekends | James' brother | |
| 2011 | Slacker 2011 | Boyfriend | |
| 2015 | Manson Family Vacation | Nick | |
| Paper Towns | English Teacher | ||
| 2016 | Rainbow Time | Adam | |
| 2017 | Landline | Ben | |
| Beatriz at Dinner | Alex | ||
| Outside In | Chris Connelly | ||
| 2018 | Prospect | Damon | |
| Duck Butter | Jay | ||
| The Oath | Clark Stewart | ||
| 2019 | Pink Wall | Leon | |
| Phil | Malcolm | ||
| 2020 | Horse Girl | Ethan | |
| Shithouse | Professor Notkin | Uncredited | |
| 2022 | Ghostwritten | Guy Laury | |
| 2023 | The Caine Mutiny Court-Martial | Lieutenant Allen Bird MD | |
| Pain Hustlers | Larkin | ||
| 2026 | Other Mommy | Filming | |
| TBA | I Play Rocky | John G. Avildsen | Filming |
| Year | Title | Role | Notes |
| 2012–2017 | The Mindy Project | Duncan Deslaurier | 13 episodes |
| 2014–2019 | Transparent | Josh Pfefferman | 38 episodes |
| 2016 | Animals. | Dennis (voice) | 2 episodes |
| 2017–2020 | Search Party | Elijah | 7 episodes |
| 2017 | Room 104 | Daniel | Episode: "I Knew You Weren't Dead" |
| 2019 | Drunk History | John C. Lilly | Episode: "Drugs" |
| Stumptown | Alan | Episode: "Missed Connections" | |
| 2021 | The Chair | Bill Dobson | 6 episodes |
| Cinema Toast | (voice) | 1 episode | |
| 2022 | Industry | Jesse Bloom | 7 episodes |
| 2024 | Percy Jackson and the Olympians | Hades | Episode: "We Find Out the Truth, Sort Of" |
| 2025 | Dying for Sex | Steve | miniseries |
| Year | Award | Category | Nominee(s) | Result | Ref. |
| 2022 | Peabody Awards | Entertainment | Somebody Somewhere | Nominated |