Flanagans

Its rustic furniture is from a small village in County Cork, the green-jerseyed staff are mostly Irish natives, and although it's clearly playing on a certain cliché preeminent not only in Austria but also in other parts of the world, you cannot get more Ireland in Vienna than at Flanagans'. A big menu is sporting different beers and spirits as well as hearty food at very affordable prices, and when this pub pulls together for events such as St. Patrick's Day or the Rugby World Cup, there ain't a jollier - and louder - place about.
(Note: the pub is divided into a smoking and non-smoking section!)

Flanagans Irish Pub
Schwarzenbergstrasse 1-3
1010 Vienna [to find on Google Maps, click here]
Phone: +43-1-5137378
Opening hours: Sun-Thu 10am-2am, Fri-Sat 10am-4am
http://www.flanagans.at/