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Cynthia Addai-Robinson (born January 12, 1980) is an American actress. She is known for her roles as Naevia in the Starz television series Spartacus, DC Comics character Amanda Waller in The CW TV series Arrow, and Nadine Memphis on the USA Network series Shooter. She currently plays the role of Tar-Míriel on the Amazon Prime The Lord of the Rings series The Rings of Power.
| Year | Title | Role | Notes |
| 2009 | Mississippi Damned | Milena | |
| 2011 | Colombiana | Alicia | |
| 2013 | Star Trek Into Darkness | San Francisco Woman | |
| 2016 | The Accountant | Agent Marybeth Medina | |
| 2018 | Closure | Yasmina | |
| Always & 4Ever | Nicole | ||
| 2022 | The People We Hate at the Wedding | Eloise | |
| 2025 | The Accountant 2 | Agent Marybeth Medina |
| Year | Title | Role | Notes |
| 2002 | The Education of Max Bickford | Susan | Episode: "Murder of the First" |
| 2005 | Law & Order: Trial by Jury | Lillian Beaudriville | Episode: "41 Shots" |
| Law & Order: Criminal Intent | Jeanette | Episode: "Saving Face" | |
| 2006 | Justice | Debra Mortin | Episode: "Prior Convictions" |
| 2007 | CSI: Miami | Courtney Rinella | Episode: "Internal Affairs" |
| Dirt | Michelle / Woman | 2 episodes | |
| Entourage | Amanda's Assistant | Episode: "Less Than 30" | |
| Life | Stephanie | Episode: "Tear Asunder" | |
| Dash 4 Cash | Meredith | Television film | |
| A.M.P.E.D. | Paige Moscavell | Television film | |
| 2009 | Numb3rs | Trisha Moreno | Episode: "Guilt Trip" |
| CSI: NY | Dr. Karita Neville | Episode: "Greater Good" | |
| 2009–2010 | FlashForward | Debbie / Nurse | 6 episodes |
| 2010 | Edgar Floats | Dana | Television film |
| 2012 | NCIS: Los Angeles | Female Flight Attendant | Episode: "Touch of Death" |
| 2012–2013 | Spartacus | Naevia | 18 episodes |
| 2013 | The Vampire Diaries | Aja | 2 episodes |
| King & Maxwell | Megan Ainsley | Episode: "Pilot" | |
| Jodi Arias: Dirty Little Secret | Sheri | Television film | |
| CSI: Crime Scene Investigation | Michelle Rowlands | Episode: "Last Supper" | |
| 2013–2016 | Arrow | Amanda Waller | 17 episodes |
| 2014 | Dallas | Private Investigator | Episode: "Like Father, Like Son" |
| Ambience Man | Megan | Episode: "Miss Period" | |
| 2015 | Texas Rising | Emily West | 5 episodes |
| 2016–2018 | Shooter | Nadine Memphis | 31 episodes |
| 2016–2019 | Chicago Med | Vicki Glass / Dr. Vicki Glass | 10 episodes |
| 2019 | Power | Ramona Garrity | 10 episodes |
| 2020 | Stumptown | Violet | Episode: "The Dex Factor" |
| 2022–present | The Lord of the Rings: The Rings of Power | Tar-Míriel | 6 episodes |
| Year | Title | Role | Notes |
| 2011 | Noire | Female Pedestrian 5 | Voice role |
| 2014 | Lego Batman 3: Beyond Gotham | Amanda Waller | Voice role |
| Year | Association | Category | Work | Result | Ref. |
| 2015 | Women's Image Network Award | Best Actress in a Drama Series | Texas Rising | Nominated |