Declan Reynolds grew up in Monaghan, Ireland near border of Northern Ireland. His father was a tradesman with Monaghan County Council and his mother was a shop assistant. He was educated at St Macartan's Secondary School aka "The Sem". His interest in acting began with Monaghan Youth Theatre (MYT) in mid 1990s. He acted in local stage productions in the Garage Theatre with Monaghan Dramatic Society (MDS), Drunk Monkey Theatre Company and Drumlin Players. While finishing school he work two part-time jobs in a local video rental store where his love for movies grew and at night in a local nightclub cloakroom called Applejacks - where his idea began for his directorial debut feature film
The Nightclub Days.
Declan attended Queens' University in Belfast where he majored in Psychology, as well as studying Sociology and Anthropology.
He trained with the Irish Army Reserves (FCA) for several years rising to the rank of 3* Private.
Declan was supposed to start in the Gaiety School of Acting 2 year course but decided to study Film Studies at University College, Dublin (UCD) where he was studied script-writing and film production with classmates screenwriter
Kevin Jakubowski and Oscar nominated director
Steph Green. He began writing his own short films and feature films, developing his first short film
Jack (2005) and his directorial debut
The Nightclub Days.
In between, he appeared on stage in the Dublin Fringe Festival 2004 with "Seven Deadly Teens" by Orla Dunne and Independent Theatre Workshop.
In 2005, Declan appeared in
Podge and Rodge. A Scare at Bedtime (1997) for RTE.
When Grand Pictures came to Monaghan to start filming
Nicolas Roeg's
Puffball: The Devil's Eyeball (2007) in 2006, Declan was cast in the film as Mr Kingston, the Estate Agent - opposite
Kelly Reilly,
Miranda Richardson and
Donald Sutherland.
In 2007, Declan appeared in long running RTE soap
Fair City (1989) when Leo Dowling's wife, Lana, goes missing, he was the last person to see her alive. Declan also appeared in BBC's horse drama
Rough Diamond (2006) opposite his younger brother Billy Reynolds on screen with
Conor Mullen (
Red Rock (2015),
Stanley Townsend (
24: Live Another Day (2014)) and
Lorraine Pilkington (
Human Traffic (1999)).
In 2011, Declan travelled to India with the Drumlin Players to perform a Brian Friel play called "The London Vertigo" as part of an international theatre festival.
Declan starred in
Eoin Cleland's comedy
Free House (2011) for RTE Storyland 2011 and then applied for RTE Storyland 2012 with his own original comedy
Trouble Times Three (2012) which was selected for production in the top 12 of the total 86 entries.
Trouble Times Three (2012) went on to finish in the top four finalists, receiving 30,000 EUR from RTE (Ireland's State Broadcaster) to make four webisodes.
Declan appeared opposite "Nidge"
Tom Vaughan-Lawlor in RTE's critically acclaimed crime drama
Love/Hate (2010) in 2012. In that same year, he also appeared in
Saving the Titanic (2012) with
Ciarán McMenamin.
In 2013, Declan was awarded an Arts & Culture award by Monaghan County Council for his acting achievements to date.
In 2014, Declan was cast in the leading role as hunchback Bailey Farrell in comedy-horror
The Gaelic Curse (2016) directed by
Jack Conroy (Cinematographer on Oscar Winning Film
My Left Foot (1989) and
The Field (1990)) which was available on Amazon Prime Video, after which he won Best Actor in a Leading Role at Amsterdam IFF of World Cinema 2018. Declan met his future wife Irish mezzo soprano
Norah King on set. They now have two children together.
In 2018, Reynolds starred as Belfast reporter Liam Madden in the period drama
Election 18 (2018) set in 1918 about Women's Suffrage and Ireland's 1918 General Election. He has also starred in the TV pilot called
TX (2021) which was film on location in Kerry.
In 2023, Declan was cast in
King Táine's directorial debut
The Wilde Sisters (2024) based on the gruesome death of Oscar Wilde's two illegitimate half-sisters in Monaghan in 1871 opposite his long-time friend
Joanne Brennan.
In 2024, Declan was cast as the bank manager in
Sunphlowers (2025) opposite
Anne McCrudden, supported by Screen Ireland. This film premiered at Galway Film Fleadh 2025 on 10th July 2025.
In summer 2025, Declan was cast opposite
Chris Colfer in sci-fi horror film
The Restoration at Grayson Manor (2025) with writer / director
Glenn McQuaid with
Alice Krige which filmed for six weeks in Stradbally Hall, County Laois - also supported by Screen Ireland.
Over his 25 year career, Declan has been fortunate to work with several notable Irish and British directors so far including
Nicolas Roeg (
Puffball: The Devil's Eyeball (2007)),
Paddy Breathnach (11850 TV advert),
Ian Power (Credit Union TV advert),
David Caffrey (Love/Hate),
Brian Durnin (Prepay Power advert) and
Glenn McQuaid (
The Restoration at Grayson Manor (2025) ).
Declan has appeared in many TV commercials in several countries such as Eli Lilly's Zepbound (USA), App Zu Rossmann! (Germany), Google B2B (UK) and for EBS Mortgages, PrePay Power, GAA, Strong Roots, Aquafina Water, Carlsberg, Meteor, Sony Playstation 2, Invest in Northern Ireland, 11850 Directory Enquires, Lidl (Northern Ireland), the Irish Independent, the Road Safety Authority (RSA), Alcoholics Anonymous, the Irish League of Credit Unions (ILCU), the Irish Cancer Society, Lloyds Pharmacy in the Republic of Ireland.