Magni Grenivík is an Icelandic sports club from the village of Grenivík, in northern-central Iceland, mainly known for its football team. The club's football team currently plays in the second tier of Icelandic football also known as Inkasso-deild karla. Magni was founded in 1915 by Magnús Björnsson, making it one of the oldest teams in Icelandic football history.