Irrespective of mitigation efforts, adaptation measures will be needed in most parts of the world. The greatest challenge will be for developing countries. The estimated needs for adaptation funding in developing countries are considered in the context of the status and ‘delivery’ of the current financing efforts made under the UN regime and the anticipated Adaptation Fund. A considerable gap exists between the actual (as well as projected) supply of funding and estimated adaptation needs. A number of alternative financial mechanisms are suggested to close the gap between estimated needs and actual delivery.