Ogna is a village in Hå municipality in Rogaland county, Norway. The village is located immediately north of the village of Sirevåg on the shores of the Ognaelva river. The village was the administrative centre of the historic municipality of Ogna. The village is the site of Ogna Station, a railway station along the Sørlandet Line. The 0.26-square-kilometre (64-acre) village has a population (2019) of 364 and a population density of 1,400 inhabitants per square kilometre (3,600/sq mi).