As I came upon an origami project that needed templates for regular polygons, I decided to make my own and upload them here for others to use as well.
I included polygons from triangle (equilateral) up to Icosagon (20 sided Polygon). You will need to play with your printer settings if you want your template at a particular size. For example if you want your template to fit a 15 cm (5.9 in) Kami paper, then you set your Page size to “user defined” and add 15 cm x 15 cm as paper size. Even if you print out your template with regular A4 copy paper, the size of your template will be around 14 cm in diameter. You might also need to disable printer margins.