Steinheii is a mountain in the municipality of Bykle in Agder county, Norway. The 1,421-metre (4,662 ft) tall mountain has a topographic prominence of 260 metres (850 ft) which makes it the 10th highest mountain in Agder county. The mountain sits in the southwestern part of the municipality, just south of the lake Botsvatn and east of the lake Ytre Storevatnet. The nearest village is Bykle, located about 15 kilometres (9.3 mi) to the northeast.

• List of mountains of Norway