Penny Crayon is a 1989 British children's television series that tells the adventures of a very intellectual and well-meaning (but occasionally mischievous) schoolgirl from London who loves to draw, and her escapades accompanied by her best friend, Dennis. Using the magic crayons that she always carries with her, she brings everything that she ever draws to life, to either help them on their adventures or to get them out of tricky situations, and usually creating a world of chaos until it is either erased or washed away.

The origins of Penny's crayons was never explained or hinted at in the series; however series creator Peter Maddocks released a prequel story, along with an adaptation of the episode 'Dickens of a Mess', in digital format in 2012, which told the story of how Penny came to have her magic crayons.