A universal gutter hanger assembly includes a hanger body having a front end and a back end. A front attachment feature at the front end of the hanger body is configured to engage with a front end of the gutter. A back attachment feature at the back end is configured to engage with a back end of the gutter. The back attachment includes a clip extending upwardly from the back end and configured to engage with gutters having various configurations of back ends. In some examples, the hanger body includes an arcuate-shaped bottom surface that extends from the front end to the back end.