Core may refer to:
- Core Platform Team, the Wikimedia Technology team that works on MediaWiki and various other software services (also known as Core Team; previously MediaWiki Platform team).
- Strategy core team, the team that works on the Wikimedia 2030 Movement Strategy process (also known as Core Team)
- MediaWiki, the collaborative editing software that Wikipedia runs on (also known as "MediaWiki core", to distinguish it from the various MediaWiki extensions that add to the core functionality)
- See "Core" at Wikitech for uses of core in the context of Wikimedia technology.