Kapteyn

Kapteyn may refer to:


 * Jacobus Kapteyn - Astronomer
 * Parallactic instrument of Kapteyn - the instrument used by Kapteyn to analyze photographic plates
 * Jacobus Kapteyn Telescope - telescope named after Jacobus Kapteyn
 * Kapteyn's Star - star named after Jacobus Kapteyn
 * Kapteyn (crater) - Lunar crater named after Jacobus Kapteyn
 * Kapteyn Astronomical Institute - Dutch Astronomical Institute named after Jacobus Kapteyn
 * Paul Joan George Kapteyn - Dutch Judge