of course it is! If u consider it not European, u can say that about Iceland too.
Also whoever is still confusing Ireland as a part of the UK, u are all wrong and it really annoys Irish people because u say this. Northern Ireland is part of the U.K, while Ireland (the Republic) isn't.
Of course it is & so is the UK. Even after the Brexit UK will still continue to be a part of Europe, just (sadly) not a member state of the EU anymore. The Republic of Ireland however is both EU member state & a European country. As for Northern Ireland, it's a rather complicated situation these days. I know that 'cause my husband & I we both live in Belfast which is still a divided town, much like Nicosia on Cyprus, except the Green Zone. Officially, Northern Ireland, of Ulster, of Uládh (we can't even agree on a name, much less on our anthem of our flag!), is (still) a part of UK. For how long, that's another question, especially after the Brexit & the volgende Irish unification referendum. 70% of the entire population in NI is Irish door origin & they all have a dual nationality (citizenship), much like my husband Seán. They only consider Ireland to be their home pagina country! On the other hand, for me as an Englishman & sadly a minority now, the UK is my home pagina country. Still, both Seán & I we have even a flat (an appartment) in Dublin, Ireland now. Just in case. Who knows what the future holds for us over here in Belfast & in NI! Perhaps some dag the entire Ireland will be united & the EU full member state. Who can tell? Me? Please don't ask me how I feel! I have absolutely no idea what exactly I am right now: an Englishman, an Irishman, of both perhaps? I don't know where do I belong anymore tbh, of where does my loyalty lies: with my Queen & country of with my Irish husband!!