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Lovelock gravity (Lovelock theory of gravity) is a mathematical model of gravity that is a modification of general relativity (GR), and which can differ from GR for spacetimes of dimension higher than four, i.e., it can be thought of as one possible generalization of GR applicable to more dimensions. It was devised by David Lovelock in the 1970s. It is of interest for theoretical exploration, and potentially of interest given that physics finds it plausible that more than three spatial dimensions might exist, those beyond the familiar being extremely curved to the point that they are microscopic and not perceived. Recent and improving observation of black holes offers means to test such models of gravity that have been merely theoretical in the past.