Eógan
- Anglicisation
- Attorney General of Ireland
- Cenél nEógain
- Clan Ewen of Otter
- Clan Ewing
- Clan MacCowan
- Clan MacEwen
- Cumbrians
- Egan (surname)
- English language
- Eoghain Ó Cianáin
- Eoghan Corry
- Eoghan Fitzsimons
- Eoghan Harris
- Eoghan Hickey
- Eoghan Kenny
- Eoghan McDermott
- Eoghan McGettigan
- Eoghan Quigg
- Eoin
- Euan
- Eugene (given name)
- Evan
- Ewan
- Ewen
- Ewin
- Ewing (given name)
- Eógan mac Muiredaig
- Eógan mac Néill
- Eóganachta
- Eóganan mac Óengusa
- Eóghan of Argyll
- Gerald FitzGerald, 9th Earl of Kildare
- Greek language
- Irish language
- Irish name
- Latin
- List of Scottish Gaelic given names
- List of rulers of Tír Eoghain
- McCown
- Mug Nuadat
- Old Irish
- Old Welsh
- Owain
- Owain Foel
- Owain ap Dyfnwal (died 1015)
- Owain ap Dyfnwal (fl. 934)
- Owen (name)
- Primitive Irish
- Rachel Bromwich
- Scottish Gaelic
- Tír Eoghain
- Welsh language
- Éogan Mór
- Éogan mac Durthacht
- Éogan of Ardstraw