In-situ remediation has assumed large proportions in dealing with terrestrial soil pollution. Although implementation of in-situ remediation for contaminated sediments is restricted by the fact that dredging is necessary for nautical or water management reasons, it should not be discarded beforehand. In this paper a number of potentially relevant options for in-situ remediation of contaminated sediments are given. It is the intention of the authors to increase the decision makers' awareness that these options may be worth considering, if a number of boundary conditions are fulfilled. These refer to the risk reduction necessary, the time available, local conditions, etc.