Siobhán Kate Cullen is an Irish actress. She began her career as a child actress, making her debut in Marina Carr's By the Bog of Cats (1998) at the Abbey Theatre. She landed her first major screen role in Eoin Macken's horror film The Inside (2012).
Cullen had roles in the RTÉ1 and BBC One miniseries Paula (2017), the ITV adaptation of The Long Call (2021), the BritBox series The Dry (2022–2024), the RTÉ series Obituary (2023–), and the Netflix series Bodkin (2024). She was named a 2022 Screen International Star of Tomorrow.

Bodkin
Dubheasa 'Dove' Maloney · (7 episodes)
2024

Obituary
Elvira Clancy · (6 episodes)
2023

National Theatre Live: Straight Line Crazy
Finnuala Connell
2022

The Dry
Caroline Sheridan · (8 episodes)
2022

Dalgliesh
Josephine Fallon · (2 episodes)
2021

The Long Call
Caroline Reasley · (4 episodes)
2021

The Bright Side
Tracy
2021

The Cherry Orchard
Varya
2020

Origin
Katie Devlin · (10 episodes)
2018

Paula
Morgan · (3 episodes)
2017

The Limehouse Golem
Sister Mary
2016

The Randomer
Roberta
2016

Jimi: All Is by My Side
Jenny
2013

The Inside
Corina
2012

The Clinic
Kristen · (3 episodes)
2003

The Crooked Mile
Jenny
2001
Babies
Lisa · (0 episode)