Technically yes, but not practically. Sharpening these types of blades would take specialized equipment and really isn't practical. As long as you aren't hitting rocks or metal, these blades will stay sharp for a long time, and can be replaced without too much expense. These blade can also break, and if you're planning on lots of heavy work out in the backcountry, it's not too hard to carry a spare. The bow saws can accommodate spare blades alongside the one on the saw.