Spline

Spline may refer to:

Mathematics

 * Spline (mathematics), a mathematical function used for interpolation or smoothing
 * Smoothing spline, a method of smoothing using a spline function

Devices

 * Spline (mechanical), a mating feature for rotating elements
 * Flat spline, a device to draw curves
 * Spline drive, a type of screw drive
 * Spline cord, a type of thin rubber cord used to secure a window screen to its frame
 * Spline (or star filler), a type of plastic cable filler for CAT cable

Other

 * Spline (alien beings), in Stephen Baxter's Xeelee Sequence novels