Abstract Octopus is a fishery commodity that is the target catch of fishermen in Simeulue Regency because of its very high price. This study aims to identify the supply chain, calculate the value of fishery production and the percentage of octopus (Octopus Cyanea) production in the PiSiSi Simeulue MPAs. This research was conducted in March-April 2023. The research method used was interviews with purposive sampling techniques. Based on the results of the analysis, it was found that the value of production generated from buyers (collectors) was IDR 34,192,104,976 with a total weight of 440.56 tons. The contribution of PiSiSi KKP to the production value of Simeulue Octopus is 9.83%. Based on this research the octopus supply chain starts with the catch of fishermen who are sold to collectors and then sold again to buyers in Sinabang and sold locally and domestically to North Sumatra and Java Island to be processed and then exported to Asia, Europe and America.