Abstract: A dock post safety cap made of closed cell foam or a similar pliable material capable of absorbing an impact. The dock post cap is designed to protect individuals, particularly children, who happen to fall while walking or running down a boat dock and might strike one of the posts supporting the dock that protrude through the surface of the deck. The safety cap is placed over the top of the dock post and retained by friction. The protection afforded by the post cap is optimized by making the thickness of the foam around the top of the dock posts thicker than the foam around the sides of the dock post. To further customize the safety cap for each application, a chamfer may be added at the juncture of the top and sides. In addition, reflective material may be included to enhance visibility at night.