Sketch Up is a 3D modeling computer program for a wide range of drawing applications such as architectural, interior design, landscape architecture, civil and mechanical engineering, film and video game design. It is available as a web-based application, Sketch Up Free,[4] and a paid version with additional functionality, Sketch Up Pro. Previously, a freeware version, Sketch Up Make, was also available.

Sketch Up is owned by Trimble Inc., a mapping surveying and navigation equipment company.[9] There is an online library of free model assemblies (e.g. windows, doors, automobiles), 3D Warehouse, to which users may contribute models. The program includes drawing layout functionality, allows surface rendering in variable “styles”, supports third-party “plug-in” programs hosted on a site called Extension Warehouse to provide other capabilities (e.g. near photo-realistic rendering) and enables placement of its models within Google Earth.