A phenomenological model is a scientific model that describes the empirical relationship of phenomena to each other, in a way which is consistent with fundamental theory, but is not directly derived from theory.

The phenomenological method focuses on studying the phenomena that have impacted an individual. This approach highlights the specifics and identifies a phenomenon as perceived by an individual in a situation. It can also be used to study the commonality in the behaviors of a group of people.

Within the well-tested and generally accepted Standard Model, phenomenology is the calculating of detailed predictions for experiments, usually at high precision (e.g., including radiative corrections).