SISA is the regional sports body for the sport of surfing in the South Island and was incorporated in 1992. Its aim is to promote South Island Surfing and encourage member clubs to host events that will enable promising surfers to gain competitive experience for other national and international events.
SISA has an executive membership under the Presidency of Russell Ritchie. Executive members are elected annually at AGM. All members of the Executive work on a voluntary basis. These include Vice President Tania Huria, Treasurer/Admin Lewis Joyce / Roxanne McKerras, Media/FB Mark Bishop and Kevin Williams, Gear Custodian John Millar / Nolan Hungerford / Steve Tyro, Junior Development Mark O'Malley, Womens Rep Sarah Armstrong Park and Cultural representative Alan Te Moananui.
SISA caters for a broad cross section of the community and through the 16 affiliated clubs cover all the forms of surfing - longboard, Stand Up Paddle boarding, shortboard, bodyboard and bodysurfing.
SISA is affiliated to Surfing NZ, the national body for surfing in New Zealand.