Web can refer to:

• Spider web, a mesh built by a spider, composed of spider silk and usually used for catching prey
• World Wide Web or "the Web", a hypertext system that operates over the Internet, used for serving Web pages and transferring files
• Web 2.0, a perceived transition of the World Wide Web from a collection of Web sites to a full-fledged computing platform serving web applications
• Web (manufacturing). Many thin materials are processed as webs, continuous sheets passed over rollers. Web offset printing, where the press is fed from a roll of paper rather than individual pages, is a particularly visible application of the principle.
• WEB, a computer programming system created by Donald Knuth to implement literate programming
• Web, John Wyndham's posthumously published novel about an attempt to establish a Utopian civilization on an island populated by spiders
• The World English Bible, a public domain translation of the Bible
• The world's first web browser, see WorldWideWeb.
• The 1942 comic book character, The Web (comics).
• The web of a steel I-beam or truss in construction is the rigid structure, centered between the top and bottom flange, which transfers the structural load to steel columns