Flekkerøy or Flekkerøya is an island and residential district in Kristiansand municipality in Agder county, Norway.

On 18 September 1807 during the English Wars, a Royal Navy squadron led by HMS Spencer arrived on Flekkerøy and proceeded to slight the disused Fredriksholm Fortress by blowing it up.

[4] In 1848, a cannon battery was built, but in 1872 it was abandoned, and in 1874 the partially rebuilt Fredriksholm fortress was also closed down for good.

In 2005, the remaining military properties on Flekkerøya were secured for public outdoor recreation by the Ministry of Climate and Environment.

[5] The 10 largest politics parties in Flekkerøy (2015): The main bus stop on the island is at the roundabout where County Road 457 ends.