I will be travelling to, or I am already in, another country on a short visit before travelling to Ireland. Can I apply for my Irish visa in the Irish Embassy/Consulate there?
You should apply for a visa in your country of residence. (See Q 3). If however, there are valid reasons or extenuating circumstances which prevented you from doing so prior to your departure, you should discuss the matter with staff at the nearest Irish Embassy, Consulate, or Visa Office.