**Support curve** is a statistical term, coined by A. W. F. Edwards, to describe the graph of the natural logarithm of the likelihood function. It has a relation to, but is distinct from the support of a distribution.

The function being plotted is used in the computation of the score and Fisher information, and the graph has a direct interpretation in the context of maximum likelihood estimation and likelihood-ratio tests.

The term refers to the hypotheses being tested, i.e. whether or not the data *support* one hypothesis (or parameter value) more than any other.