Film:
* The Lord of the Rings: The Fellowship of the Ring (2001) - Elven Queen Galadriel (uncredited)
* The Lord of the Rings: The Two Towers (2002) - Elven Queen Galadriel
* The Lord of the Rings: The Return of the King (2003) - Elven Queen Galadriel
* The Piano (1993) - Mrs. Baines
* Whale Rider (2002) - Koro's Sister
* The World's Fastest Indian (2005) - Betty
* The Luminaries (2020) - Lydia Wells
* The Legend of Baron Von Frankenstein (2012) - Madame La Morte
* The Dead Lands (2014) - The Lady
* The Rehearsal (2017) - Aunty Cheryl
Television:
* The Lord of the Rings: The Rings of Power (2022-present) - Elven Queen Galadriel (recurring role)
* Shortland Street (1992-present) - Various roles (recurring)
* This Is My Story (2002) - Te Rina
* Mercy Peak (2002-2003) - Nurse Judith
* The Cult (2009) - Janet
* The Almighty Johnsons (2011-2013) - Hela
* The Straits (2012-2014) - Rose
* Top of the Lake (2013) - Linda
* The Luminaries (2020) - Lydia Wells
* Creamerie (2020) - Janey
This list is not exhaustive, but it provides a good overview of Sonia Todd's significant projects. She continues to be an active and highly regarded actress, bringing depth and nuance to every role she takes on.