brosna () is a hamlet in county offaly, ireland. it lies in the valley of the little brosna river less than one kilometer off the n62 national secondary road. brosna is deceptive in appearance; the main road through the village is home to families that have been here for several generations. farming families and a thriving plumbing business operate in and around the hamlet. like all rural areas in ireland, brosna has some neglected old houses, but residents manage to give the place a pretty look with the use of hanging baskets and planted flowers on the bank of the stream that flows through it. at the top of the village a bench awaits walkers or conker collectors in need of a rest or a chat if the day is kind.