It's not officially recommended, and we haven't actually tested it, but it would probably be fine on the top rack. It does have a plastic shell that could potentially melt under high heat, and there is a slight possibility that water could get inside the shell to cause long term problems. These are unlikely based upon the intended use and design, but automatic washing conditions can be a bit more severe. Hand washing will most likely ensure a longer life, but if you give the dishwasher a try, be sure to post your results back here to let everyone know. We will do the same.