Indicatrix may refer to:
Differential geometry Dupin indicatrix, a conic section which describes the local shape of a surface Tissot's indicatrix, which describes and visualizes the distortion of a map Tangent indicatrix, an object in differential geometry related to a closed space curve
Optics Indicatrix, a special case of the index ellipsoid in the study of crystals and refractive indices
See also Indicator, the more common masculine form of the word