Film:
* The Woman in Black (2012): As Mrs. Daily
* The Guard (2011): As Garda Sergeant O’Dwyer
* The Best Exotic Marigold Hotel (2011): As Evelyn Greenslade
* A Little Chaos (2014): As Sarah
* The Falling (2014): As Miss.
* The Lobster (2015): As Hotel Manager
* Their Finest (2016): As Phoebe
* The Electrical Life of Louis Wain (2021): As Caroline Wain
* Boiling Point (2021): As Beth
* The Lost Daughter (2021): As Callie
Television:
* The Trial of Christine Keeler (2019): As Rosemary "Roxy"
* W1A (2014-2017): As Anna
* The Fall (2013-2016): As Sally Ann
* The Casual Vacancy (2015): As Krystal
* The Last Kingdom (2015-2022): As Mildrith
* The Cry (2018): As Alison
* The Stranger (2020): As Corinne
* The Split (2018-2022): As Ruth
* Chloe (2022): As Cathy
* This Is Going to Hurt (2022): As Harmony
* The Lord of the Rings: The Rings of Power (2022-present): As Queen Regent Míriel
Theater:
Monica Dolan is also a highly acclaimed stage actress, having won numerous awards for her performances in plays like:
* The Weir by Conor McPherson
* The Seafarer by Conor McPherson
* The Night Alive by Conor McPherson
* Uncle Vanya by Anton Chekhov
This is just a sample of her impressive body of work. She continues to be an active and in-demand performer in all three mediums.