Template

a stencil, pattern or overlay used in graphic arts (drawing, painting, etc.) and sewing to replicate letters, shapes or designs
a pre-developed page layout in electronic or paper media used to make new pages with a similar design, pattern, or style
Form letter, a predefined letter which retains its primary intent when individually customised with variable data or text.

Computer science and information technology

Template (file format), a standardized non-executable file type used by computer software as a pre-formatted example on which to base other files, especially documents
Template (C++), a tool for generic programming especially in the C++ language
Template metaprogramming, a programming technique used by a compiler to generate temporary source code
Template method, an object-oriented design pattern
Template processor, a system that combines a template with data to produce an output.
Template (word processing), a standard document containing layout and styles used to configure word processing software
Style sheet (web development) or master page on which you can globally edit and format graphic elements and text common to each page of a document
Web template or web template system, a master page used to produce web pages
A main document from which mail merge documents are created

Mechanical template, used to cut and shape a product, such as:
- a die (manufacturing)
- a mold

Template (racing), a device used in car racing to ensure that the body of the race vehicle adheres to specifications