Yes is the short answer but there are quite a few things to take into consideration. Check that your printer can take the paper. Paper over 140 gsm (grams per square meter) often jams in the printer.
Simply so, can I laser print on watercolor paper?
Although watercolor paper will not have any sort of coating on it, the toner may not adhere well to the surface of the paper, and the paper may not hold up well to the heat of a laser printer.