Possidi is a kitesurfing spot located on the Kassandra peninsula, in Halkidiki, northern Greece. This spot is on the western tip of the peninsula, offering exposure to the winds of the Thermaic Gulf.

The spot benefits from regular thermal winds in summer, mainly from the northwest to west sector. The body of water is shallow with a sandy bottom, suited for intermediate riders. Halkidiki is a popular seaside destination offering many riding opportunities.