Tanya Moodie is a British-Canadian actor and producer, best known for her work on the television series Motherland and Silo, in addition to her many stage credits, which include productions with the Royal Shakespeare Company, the Royal National Theatre, the National Theatre, and the Théâtre des Bouffes du Nord.

Tanya Moodie was born in Quebec, Canada, to Jamaican parents.

She moved to England at the age of 17, when she was offered a place at the Royal Academy of Dramatic Art (RADA), where she was later employed as an associate teacher and council member.

Moodie's first television role was in the comedy So Haunt Me in 1994, followed by a starring role as Hunter in Neil Gaiman's 1996 fantasy mini-series Neverwhere (1996). She featured in guest roles in various series in the 2000s, and in 2008–9 had a regular role in Irish medical drama The Clinic. She also played the role of John Watson's therapist Ella Thompson in Sherlock.

In 2016 she played Gertrude in Simon Godwin's production of Hamlet for the Royal Shakespeare Company.

From 2019, Moodie starred as Meg in the BBC television comedy series Motherland. In a 2021 interview with the Huffington Post, Moodie said that she was proud of the feedback she had received about her character's cancer storyline: "There's been people who have written me very personal messages saying that they're going through [cancer] right now or their parents are, and they say we've really shown what it's like. I'm really happy that that's happened – I didn't expect it to. I didn't finish filming and say 'I really feel like I've nailed what it's like to go through this journey', because it's so subjective and unique to people."

In 2019, Moodie was in the BBC Radio 4 audio drama Forest 404.

In 2020, Moodie starred in the third series of Tin Star as Catherine Mckenzie. The series was created by Rowan Joffé.