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Contents:  Overviews · Topics · Outline of knowledge · Portals · Featured content · Glossaries · Categories · A–Z Index

Wikipedia's contents


There are two ways to look things up in Wikipedia: by searching or by browsing.

  • If you know the name of an article for which you are looking, simply type it into Wikipedia's search box and press Go, or you can search for information on a topic by typing it in the box and selecting Search.
  • If you would like to look around the encyclopedia to see what is on it, use Wikipedia's Contents pages. Lists and indices are examples of contents for a published work, and Wikipedia has many of each, including a complete alphabetical index and indices by category.
    Links to all of Wikipedia's main contents pages are presented below, and they in turn link to the more specific pages.

Wikipedia's reference lists


Overviews of Wikipedia

An overview is a survey of what is covered in an area. Overviews of Wikipedia's coverage include:

  • Outline of knowledge — a set of outlines combined to provide a guide to Wikipedia's content. Each outline shows the structure of its subject and serves as a table of contents to its coverage on Wikipedia.
  • Overviews — a one-page summary of the contents of Wikipedia, presenting an overview of 12 major subjects, providing links to key articles in each.
  • List of academic disciplines — Wikipedia arranged like a college course curriculum.

Featured content

Featured content represents the best Wikipedia has to offer, and undergoes vigorous peer review.
It can be found on the following directories:

  • Featured articles — what we believe to be the best articles in Wikipedia.
  • Featured pictures — images we find beautiful, impressive, and informative.
  • Featured lists — what we believe to be the best lists in Wikipedia.
  • Featured portals — portals we regard as being particularly useful, attractive, and well maintained.
  • Featured topics — topics we believe have coverage which is both comprehensive and well written.
  • Featured sounds — sounds we find beautiful, impressive, and informative.


Wikipedia has thousands of topic lists; some are even lists of other lists.

  • Lists of topics — a selective collection of article lists, arranged by subject.
  • Category:Lists — a list of lists in the category system, arranged alphabetically.

Two of the broadest collections are:


A portal is an introductory page for a given topic. It complements the main article of the subject by introducing the reader to key articles, images, and categories that further describe the subject. They also include to-do lists that are used mostly by Wikipedia's editors.

Portals can be found at:


Glossaries are lists of terms with definitions:


Timelines are lists of articles organized chronologically. These are the top-level timelines and lists of timelines:

Wikipedia's indices

Alphabetical indices

Categorical indices

Wikipedia's main categorical index system is automatically generated from information (category tags) at the bottom of each article. The top-end pages of the category system are:

  • Categorical index – an index of major categories, arranged by subject - that section of the page is an exception to the category autogeneration rule, as it is crafted by hand.
  • Category:Categories — the highest level or "root" category in Wikipedia - its autogenerated entries are listed at the bottom of the page.
  • Category:Contents — the category equivalent to this page.
  • Category:Articles — the category in which all article category systems are located.
  • Special:Categories — every category listed alphabetically.

Wikipedia's other broad categorical indices are:

Spoken articles

Content listings

Overviews · Outlines · Topics · Academic disciplines · Glossaries · Portals · Categories
Countries · People · Timelines (centuries · decades) · 2009 · Anniversaries (today) · Current events · Deaths this year

Dewey Decimal classes · Library of Congress classes · A–Z Index

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