Arninge is a locality situated in Täby Municipality, Stockholm County, Sweden.

The district borders Österåker Municipality in the east, Vågsjö and Löttingelund in the north, and Rönninge in the south.

Even today, there are still traces of e.g. behind the newly built Flink's construction store and Andy's Lekland where several burial mounds and a small defensive wall (ancient castle) are still visible.

There are still traces of sea bays with bare rocks and lakeside plants (reeds).

From 2015 onwards, Statistics Sweden has defined a new urban area for these settlements with the name Arninge.