Calculator programming is a feature available on many high-end calculators. It allows the user to write and store programs in the calculator in order to solve difficult problems or automate an elaborate procedure.

Programming capability appears most commonly (although not exclusively) in graphing calculators, as the larger screen allows multiple lines of source code to be viewed simultaneously (i.e., without having to scroll to the next/previous display line).

The most common languages used in calculator programming are TI-BASIC, RPL (Reverse Polish Lisp), C, C++, and assembly. As these languages are commonly known, many programs written for calculators can be found on the internet. Users can download the programs to a personal computer, and then upload them to the calculator using a specialized link cable.

Commonly available programs for calculators include everything from math/science related problem solvers to arcade style video games, as well as so-called demos.