Castle Name	Condition	Description	Early Founder(s) -- Time Period(s) Contructed	Parish/Townland	Ord	Residency	Links
Aghagower Round Tower		Round Tower			M035804		http://cloghmore.bravepages.com/mayo/aghagower.html http://roundtowers.org/aghagower/index.htm
Aghalard Castle	Ruin		MacDonnell (c1490)				http://mayo.goireland.com/scripts/low/xq/asp/areaid.187/areatype.C/cat.9/SubjectID.77/PremisesID.17114/qx/premises.htm
Ardnaree Castle ("the king's height")	Ruins						http://www.from-ireland.net/lewis/mayo/kilmoremoy.htm
Ashford Castle	Full*		de Burgo, Guinness (c1228).	Cong			http://www.ashford.ie/welcome.htm
Balla Round Tower		Round Tower			M255848		http://cloghmore.bravepages.com/mayo/balla.html http://roundtowers.org/balla/index.htm
Ballintobber Castle (Ballintubber Castle, Tubberpatrick Castle)	None						http://www.from-ireland.net/lewis/mayo/ballintobber.htm
Ballisnihyny Castle	Ruins						http://www.from-ireland.net/lewis/mayo/kilmainmore.htm http://homepage.eircom.net/~rookery/castle15.html http://www.shrule.com/_shrule/_display_image.php?fid=6&pid=201
Ballycurran Castle (Ballycurrin Castle)	Ruins						http://homepage.eircom.net/~rookery/castle12.html http://www.shrule.com/_shrule/_display_image.php?fid=10&pid=204
Ballykeen Castle		The ruin of a 13th century de Burgo castle by the shore of Lough Mask.					http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/b/ballykeen.htm
Ballylahan Castle	Ruins		Mac Jordan -- 13th century				http://www.from-ireland.net/lewis/mayo/mayocounty.htm http://www.monasette.com/blog/gallery/ballylahan/ http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/b/ballylahan.htm
Ballylanders Castle		A late 17th century church tower forming part of a castle.					http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/b/ballylanders.htm
Ballynglan Castle (Ballinglen Castle)	Ruins						http://www.from-ireland.net/lewis/mayo/kilfyan.htm http://www.from-ireland.net/lewis/mayo/mayocounty.htm
Barnach castle	Ruins						http://www.from-ireland.net/lewis/mayo/kilmoreerris.htm
Belleek Castle	Full*		Earls of Arran -- 14th century	Ballina		Hotel	http://www.from-ireland.net/lewis/mayo/kilmoremoy.htm http://www.belleekcastle.com/
Bingham castle	None						http://www.from-ireland.net/lewis/mayo/kilmoreerris.htm http://www.mayococo.ie/mcc3/Services/Leisure_Amenities/Beaches/ellybay.asp
Brieze Castle							http://www.from-ireland.net/lewis/mayo/ballagh.htm
Burrishoole Castle	Ruins						http://www.from-ireland.net/lewis/mayo/buhoole.htm
Carrick Kildavnet Castle (Doona, Gránuaile's, Grace O'Malley's, Carrick a-Uile, Carrickkildavnet Castle)	Partial*	A four-storeyed towerhouse.			L719941		http://www.from-ireland.net/lewis/mayo/kilcommonerris.htm http://www.from-ireland.net/lewis/mayo/mayocounty.htm http://cloghmore.bravepages.com/mayo/kildavnet.html http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/c/carrickkildavnet.htm
Carrickanass castle							http://www.from-ireland.net/lewis/mayo/killalapar.htm
Carrickkilfavney Castle			O'Malley -- 15th century				http://mayo.goireland.com/scripts/low/xq/asp/areaid.187/areatype.C/cat.9/SubjectID.77/PremisesID.17111/qx/premises.htm
Cashlaunicrobin		large promontory fort.					http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/c/cashlaunicrobin.htm
Castle Carra (Cloonlagheen castle, Carra Castle)	Ruin	A 13th century rectangular great tower.	de Staunton, MacEvilly -- 13th century hall-house	Lough Carra	G 1775	Private	http://www.from-ireland.net/lewis/mayo/bucarra.htm http://doon.mayo-ireland.ie/stop1.html http://www.from-ireland.net/lewis/mayo/kilbeagh.htm http://www.museumsofmayo.com/partry1.htm http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/c/castlecarra.htm
Castle Derowil							http://www.from-ireland.net/lewis/mayo/ballagh.htm
Castle Hill Castle	Ruins						http://www.from-ireland.net/lewis/mayo/addergoole.htm
Castle Kelly	Ruins						http://www.from-ireland.net/lewis/mayo/kilbelfad.htm http://www.irelandseye.com/aarticles/culture/names/family/okelly.shtm
Castle Lacken	Ruins						http://www.irelandoldnews.com/Galway/1840/MAY.html http://www.lacken.ie/history.htm
Castle Moriske
Castlebar (Caislen-an-Bharraigh, Barry's Castle)	None						http://www.from-ireland.net/lewis/mayo/castlebar.htm http://www.from-ireland.net/lewis/mayo/mayocounty.htm http://www.askaboutireland.com/pilots/one/People.html http://www.quinnipiac.edu/other/abl/etext/irish/pictures/p56.html
Castleburke (Kilboynell Castle)	Ruins		O'Flaherty, MacWilliam Burke				http://doon.mayo-ireland.ie/stop13.html http://www.goireland.com/scripts/low/xq/asp/areaid.4104/areatype.T/cat.15/SubjectID.125/PremisesID.17151/qx/premises.htm
Castle-MacAndrew	Ruins						http://www.from-ireland.net/lewis/mayo/bnahaglish.htm
Castlemagarrett	Ruins						http://www.from-ireland.net/lewis/mayo/crossboyne.htm
Castlemore	Ruins						http://www.from-ireland.net/lewis/mayo/castlemore.htm http://www.from-ireland.net/lewis/mayo/ballaghadireen.htm http://www.waldronireland.com/connacht.html
Castlerea (Castlereagh)	None						http://www.from-ireland.net/lewis/mayo/killalapar.htm
Clare Island Castle (Grace O'Malley castle)		16th century ruin					http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/c/clare.htm
Cloghan Castle	Ruins						http://www.from-ireland.net/lewis/mayo/kilbelfad.htm
Clooney Castle	Ruina						http://www.from-ireland.net/lewis/mayo/kilcommon2.htm http://www.nestorsbridge.com/maghera/clooney-graveyard-2.html
Cluna Castle							http://www.from-ireland.net/lewis/mayo/ballinrobe.htm
Coulogh castle							http://www.from-ireland.net/lewis/mayo/kilmoreerris.htm
Cragduff Castle	Ruins						http://www.from-ireland.net/lewis/mayo/kilmainmore.htm
Creevagh Castle		A 15th century ruin.					http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/c/creevagh.htm
Croagh Patrick		Ireland's Holy Mountain
Currawn Fortress	Ruins						http://www.from-ireland.net/lewis/mayo/kildecamoge.htm
Danganmore Fortress	Ruins						http://www.from-ireland.net/lewis/mayo/kildecamoge.htm
Deel Castle	Partial*						http://www.from-ireland.net/lewis/mayo/kilbelfad.htm http://www.from-ireland.net/lewis/mayo/ardagh.htm http://www.from-ireland.net/lewis/mayo/mayocounty.htm http://www.crossmolina.ie/local_sites.htm
Donomona Castle	Ruins						http://www.from-ireland.net/lewis/mayo/drum.htm http://towns.mayo-ireland.ie/WebX?14@60.TzW8aVJaI2s.0@.2cb646f2
Doo Castle	Ruins						http://www.from-ireland.net/lewis/mayo/kiltora.htm
Doon Castle (Doone Castle)	Ruins						http://www.from-ireland.net/lewis/mayo/aughagower.htm http://www.of-ireland.info/castles/doon.html
Doonagappul		a promontory fort					http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/c/clare.htm
Doonamo Point		A prehistoric fort.					http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/d/doonamo.htm
Doonbristy		A prehistoric fort.					http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/d/doonbristy.htm
Ellistron Castle	Ruins						http://www.from-ireland.net/lewis/mayo/kilmainmore.htm
Erbull Castle	Ruins						http://www.from-ireland.net/lewis/mayo/killasser.htm
Geesedon Castle	Ruins						http://www.from-ireland.net/lewis/mayo/drum.htm
Glynne Castle							http://www.from-ireland.net/lewis/mayo/dunfeeny.htm
Inver castle							http://www.from-ireland.net/lewis/mayo/mayocounty.htm
Kildavnet Castle (Kildownet Castle, Kildurnet Castle)	Full*	The remnants of a 15th century stronghold of Grace O'Malley.	O'Malley -- 16th century	Achill Island			http://www.from-ireland.net/lewis/mayo/achill.htm http://cloghmore.bravepages.com/mayo/kildavnet.html http://www.irishphotos.com/pic9.html http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/k/kildavnet.htm
Killala Round Tower		Round Tower			G204301		http://roundtowers.org/killala/index.htm
Killernan Castle	Ruins						http://www.from-ireland.net/lewis/mayo/kilmainmore.htm
Kinlough Castle	Partial						http://homepage.eircom.net/~rookery/castle7.html http://www.goireland.com/scripts/low/xq/asp/areaid.4104/areatype.T/cat./SubjectID.153/PremisesID.17119/qx/premises.htm http://www.shrule.com/_shrule/_display_image.php?fid=6&pid=207
Kinturk Castle	Ruins						http://www.from-ireland.net/lewis/mayo/bhane.htm http://ballyheane.mayo-ireland.ie/
Knocknalina castle	Ruins						http://www.from-ireland.net/lewis/mayo/kilmoreerris.htm
Lough Mask Castle	Ruins	A 17th century towerhouse.	MacWilliam Burke tower-house & 15th century bawn	Caher	M 1560		http://www.from-ireland.net/lewis/g/bcalla.htm http://homepage.eircom.net/~rookery/castle11.html http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/l/lough_mask.htm
Meelick Round Tower		Round Tower			M330974		http://roundtowers.org/meelick/index.htm
Meemlough castle	Ruins						http://www.from-ireland.net/lewis/mayo/kiltora.htm
Moanbane Fort							http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/m/moanbane.htm
Moyne Castle	Ruins	A 15th century rectangular towerhouse.			M 2549		http://homepage.eircom.net/~rookery/castle9.html http://www.shrule.com/_shrule/_display_image.php?fid=6&pid=210 http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/m/moyne.htm
Port Conaghra		large promontory fort.					http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/c/cashlaunicrobin.htm
Portnakally castle							http://www.from-ireland.net/lewis/mayo/mayocounty.htm
Rappa Castle							http://www.from-ireland.net/lewis/mayo/kilfyan.htm
Rathroe Castle	Ruins						http://www.from-ireland.net/lewis/mayo/kilfyan.htm http://www.kilfian.ie/Gallery.htm http://kilfian.ie/History.htm
Rockfleet Castle (Carrickahowley)	Full*	A 15th century rectangular towerhouse.	O`Malley tower-house		L931955		http://cloghmore.bravepages.com/mayo/rockfleet.html http://www.from-ireland.net/lewis/mayo/mayocounty.htm http://www.serenery.com/751RockfleetCastle.html http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/r/rockfleet.htm
Rosleven Castle (Rosslevin Castle, Rathslevin Castle)							http://www.from-ireland.net/lewis/mayo/bohola.htm
Shrule Castle	Partial*	A 16th century towerhouse.	MacWilliam Burke -- tower-house		M 2753		http://homepage.eircom.net/~rookery/castle7.html http://www.shrule.com/_shrule/_display_image.php?fid=6&pid=213 http://web.ukonline.co.uk/nigel.bacon/castles/data/ireland/s/shrule.htm
Turin Castle	Full*						http://www.from-ireland.net/lewis/mayo/kilmainmore.htm http://www.premierpropertiesireland.com/castles.htm
Turlough Round Tower		Round Tower			M207941		http://cloghmore.bravepages.com/mayo/turlough.html http://roundtowers.org/turlough/index.htm

75 -- Entries Listed