Coloring or colouring may refer to:
- Color, or the act of changing the color of an object
- Coloring, the act of adding color to the pages of a coloring book
- Coloring, the act of adding color to comic book pages, where the person's job title is Colorist
- Graph coloring, in mathematics
- Hair coloring
- Food coloring
- Hand-colouring of photographs
- Map coloring