Question: What is a ping pong ball made of? Answer : Ping pong balls are made of celluloid, which the Kids! Dictionary defines as " A colorless flammable material made from nitrocellulose and camphor and used to make photographic film." So movie reels and ping pong balls are made of the same thing! Ping pong balls were originally made from plastic, but celluloid provides a stronger bounce. Ping pong is also known as table tennis, and started off as a popular pastime in England during the 19th century. It became very popular during the 1920s, and has since become a huge global sport, especially popular in Asia.
