In geometry, a **fractal canopy**, a type of **fractal tree**, is one of the easiest-to-create types of fractals. Each canopy is created by splitting a line segment into two smaller segments at the end (**symmetric binary tree**), and then splitting the two smaller segments as well, and so on, infinitely.^{[1]}^{[2]}^{[3]} Canopies are distinguished by the angle between concurrent adjacent segments and ratio between lengths of successive segments.

A fractal canopy must have the following three properties:^{[4]}

- The angle between any two neighboring line segments is the same throughout the fractal.
- The ratio of lengths of any two consecutive line segments is constant.
- Points all the way at the end of the smallest line segments are interconnected, which is to say the entire figure is a connected graph.

The pulmonary system used by humans to breathe resembles a fractal canopy,^{[3]} as do trees, blood vessels, viscous fingering, electrical breakdown, and crystals with appropriately adjusted growth velocity from seed.^{[5]}