Mark David Duplass, born on December 7, 1976, in New Orleans, Louisiana, is an American filmmaker, actor, writer, and musician known for his contributions to the independent film scene and television. As a co-founder of Duplass Brothers Productions alongside his brother Jay Duplass, he has played a significant role in shaping modern indie cinema. Duplass's versatility as a creator and performer has earned him recognition in various genres, establishing him as a prominent figure in the entertainment industry.

Duplass's early life was marked by a strong artistic influence from his parents, Lawrence 'Larry' Duplass and Cynthia 'Cindy' (née Ernst). He cultivated his passion for storytelling during his formative years, eventually pursuing a career in filmmaking. In 1996, he and Jay launched Duplass Brothers Productions, which became a platform for their unique voice in filmmaking. Their first major project, The Puffy Chair, released in 2005, garnered critical acclaim for its intimate storytelling and innovative approach to character-driven narratives.

The Duplass brothers continued to build their reputation with films such as Baghead (2008), Cyrus (2010), Jeff, Who Lives at Home (2011), and The Do-Deca-Pentathlon (2012). These works highlighted their distinctive style and ability to blend humor with poignant emotional themes. Mark Duplass also explored the horror genre, co-writing and starring in the acclaimed film Creep (2014) and its sequel, Creep 2 (2017), showcasing his range as both an actor and a writer.

In addition to his film career, Duplass made significant contributions to television. He gained widespread recognition for his role as Pete Eckhart in the critically acclaimed series The League (2009–2015), which humorously explored the world of fantasy football. His talents extended to producing and writing, co-creating the anthology series Room 104 (2017–2020) that received praise for its innovative storytelling format. Duplass's compelling performances continued with roles in films like Humpday (2009), Greenberg (2010), Safety Not Guaranteed (2012), and The One I Love (2014).

Currently, Duplass stars as Charlie "Chip" Black in the Apple TV+ series The Morning Show (2019–present), a role that has earned him two nominations for the Primetime Emmy Award for Outstanding Supporting Actor in a Drama Series. His work in this series has further solidified his status as a talented actor in a competitive landscape. Alongside his acting, Duplass is also known for his musical endeavors, having been the lead singer of the indie rock band Volcano, I’m Still Excited!!.

Mark Duplass has continued to evolve as an artist, embracing new challenges while remaining true to his roots in independent filmmaking. His collaborative spirit and commitment to storytelling have made him a respected figure in both film and television, and he continues to influence the landscape of modern entertainment through his innovative projects and performances. Duplass's marriage to actress Katie Aselton since 2006 adds a personal dimension to his life, reflecting his deep connections both professionally and personally in the industry.