The stolen seafood was allegedly swiped from a farm in the Wagonga Inlet, Narooma, around 75km from Bega.
It’s believed around 190 oysters were taken from the farm between December 14-21.
Police say the estimated value of the missing oysters is about $2000.
Officers attached to Operation Trident, a joint operation with NSW Fisheries, are investigating the alleged oyster heist.
Anyone with information is urged to contact Batemans Bay police or Crime Stoppers.