Adobe XD (also known as Adobe Experience Design) is a vector design tool for web and mobile applications, developed and published by Adobe Inc. It is available for macOS and Windows, and there are versions for iOS and Android to help preview the result of work directly on mobile devices. Adobe XD enables website wireframing and creating click-through prototypes.

Adobe lastly announced they were developing a new interface design and prototyping tool under the name "Project Comet" at the Adobe MAX conference in October 2015, which was a response to the rising popularity of Sketch, a UX and UI design-focused vector editor, released in 2010.

The first public beta was released for macOS as "Adobe Experience Design CC" to anyone with an Adobe account, on March 14, 2016. A beta of Adobe XD was released for Windows 10 on December 13, 2016. On October 18, 2017, Adobe announced that Adobe XD was out of beta. As of June 22, 2023, Adobe XD was announced as discontinued as a purchasable item.

After the failure of Adobe's attempt to acquire Figma, Adobe disclosed it would not "further invest" in XD.

Adobe XD creates user interfaces for mobile and web apps. Many features in XD were previously either hard to use or nonexistent in other Adobe applications like Illustrator or Photoshop.

Helps creating a grid of repeating items such as lists, and photo galleries.

Creates animated prototypes through linking artboards. These prototypes can be previewed on supported mobile devices.

XD supports and can open files from Illustrator, Photoshop, Sketch, and After Effects. In addition to the Adobe Creative Cloud, XD can also connect to other tools and services such as Slack and Microsoft Teams to collaborate. XD is also able to auto-adjust and move from macOS to Windows. For security, prototypes can be sent with password protection to ensure full disclosure.