Østerhus is a village in Grimstad Municipality, in Agder, Norway. Østerhus lies at 15 m above sea level. The nearest city is Arendal, 25 km to the northeast. Beaches nearby: Morvigsanden (4.5 km), Groos (6.9 km), Bystranda (8 km). Among the landmarks around are Fjære Church (11.0 km), Homborsund Lighthouse (2.6 km) and Lillesand Church (8.3 km). Among the natural features are Indreholmen (4.6 km).
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