George Coppinger Ashlin (28 May 1837 – 10 December 1921) was an Irish architect, particularly noted for his work on churches and cathedrals. He had an early association with leading architect E.W. Pugin.
The Church of the Assumption Gowran , County Kilkenny Adelaide Memorial Church, Myshall SS Peter and Paul’s, Cork Holy Trinity, Cork St. Finbar's West, Cork Good Shepherd Convent, Cork Clonmeen, Banteer, Loreto and Presentations Convents, Fermoy AIB Midleton , Convent of Mercy, Skibbereen, St. Mary of the Angels, Dublin Convent School, Portland Row, Dublin Carmelite Church, Aungier St. Dublin 28 Fitzwilliam Pl., Dublin St Audoen's Catholic Church, Dublin SS Augustine and John, Dublin 7, Westmoreland St., Dublin, Belcamp Hall, Castleknock College Dominican Convent, Cabra Red Stables, St. Anne’s Estate, Dublin All Hallow's, Drumcondra Redemptoristine Convent Drumcondra St. Patrick’s Training College, Drumcondra. Glasnevin Cemetery St. Joseph’s Phibsborough St. Ita's Mental Hospital, Portrane All Saints Church, Raheny Blackrock College , DublinMount Anville St. George’s Killiney Dominican Monastery, Tallaght Tulira Castle Ashford Castle Clongowes Woods St. Patrick’s College, Maynooth St Kieran's College , KilkennyPresentation Church Limerick Redemptorist Church, Dundalk Netterville Almshouses Convent of Mercy Birr Rockwell College, Cashel Mooresfort Convent of Mercy, Tipperary Clonyn Castle, Greville Nugent Mausoleum St. Patrick's Cathedral, Armagh Catholic Cobh Cathedral Skibbereen Cathedral Newry Cathedral Killarney Cathedral Derry Cathedral Longford Cathedral , St. Mel's.Thurles Cathedral Gowran , the Catholic Church of the AssumptionBallyhooly Catholic ChurchFermoy Catholic Church Kileavey Catholic Church Kilrush Catholic ChurchMallow Catholic Church Midleton Catholic Church Clonakilty Catholic Church. It is said to be one of the most successful examples of Mr. Ashlin's skill as a Church architect. It is of pure Gothic of the early French style, and consists of a nave,aisles, transepts, two chapels and a baptistery.Monkstown Catholic ChurchCarrick Catholic Church Balbriggan Catholic ChurchRush Catholic ChurchBallybrack Catholic ChurchDundrum Catholic Church Inchicore Catholic ChurchRathfarnam Catholic Church Brosna Catholic ChurchCahersiveen Catholic ChurchTralee Catholic ChurchBallingarry Catholic ChurchKilfinane Catholic ChurchKilmallock Catholic ChurchEdgeworthstown Catholic ChurchDundalk Catholic ChurchCarrig-on-Suir Catholic Church Emly Catholic ChurchSt. Patrick’s Catholic Church SS Peter and Paul’s Clonmel Lattin Catholic Church Nenagh Catholic ChurchChurch of the Sacred Heart, Templemore TempletuohyCatholic Church Clonlea Catholic ChurchThe Church of the Assumption, Delvin St Livinus Catholic Church, Killulagh Ballyoughter Catholic Church, Camolin, County Wexford Ballymurn Catholic Church Newry Dominican ChurchTralee Dominican ChurchDrogheda Dominican ChurchDundalk Dominican Church Mausoleum, Monivea Bishop’s Palace, Killarney Costello Chapel Rathangan 
