The Enneagram is a nine-sided figure used in a particular system of analysis to represent the spectrum of possible personality types.
From one point of view, it can be seen as a set of nine distinct personality types, with each number on the Enneagram denoting one type. It is common to find a little of yourself in all nine of the types, although one of them should stand out as being closest to yourself. This is your basic personality type.
G. I. Gurdjieff is credited with making the enneagram figure commonly known (see Fourth Way enneagram). He did not, however, develop the nine personality types associated with it. Oscar Ichazo is generally recognized as the principal source of the contemporary Enneagram of Personality. Ichazo’s “Enneagon of Ego Fixations”, together with a number of other dimensions of personality mapped on the figure, forms the basis of the Enneagram of Personality.