Eccentric may refer to:

• Eccentricity (mathematics), a parameter associated with every conic section
• For the eccentricity of a vertex in a graph, see distance (graph theory)
• Eccentricity (orbit), in astrodynamics, calculated from orbital state vectors as an absolute value of eccentricity vector or using other methods based on orbital energy and angular momentum.
• Eccentric (mechanism), a wheel that rotates on an axle that is displaced from the focus of the circle described by the wheel
• Eccentric position of a surveying tripod to be able to measure hidden points
• Eccentric (sport), exercise movements involving the lengthening of muscle fibers
• Eccentricity (behavior), unusual or odd behavior on the part of a person, as opposed to being "normal"
• A type of deferent, a circle or sphere used in obsolete astronomical systems to carry a planet around the Earth or Sun.

Exzentrizität | Exzentrizität | Discentreco | Excentricité | Eccentricità | אקסצנטריות | Excentriek | Ekscentrycznosc | Excentricidade | Dışmerkezlik