Ajax may refer to:

• Ajax (mythology), son of Telamon, ruler of Salamis and a hero in the Trojan War, also known as "Ajax the Great"
• Ajax the Lesser, son of Oileus, ruler of Locris and the leader of the Locrian contingent during the Trojan War

Ajax (also AJAX; ; short for asynchronous JavaScript and XML) is a set of web development techniques using many web technologies on the client-side to create asynchronous Web applications. With Ajax, web applications can send data to and retrieve from a server asynchronously (in the background) without interfering with the display and behavior of the existing page. By decoupling the data interchange layer from the presentation layer, Ajax allows for web pages, and by extension web applications, to change content dynamically without the need to reload the entire page. Data can be retrieved using the XMLHttpRequest object. Despite the name, the use of XML is not required (JSON is often used in the AJAJ variant), and the requests do not need to be asynchronous.

The Pop Culture Suicides is an American experimental rock band from Chicago, Illinois featuring guitarist Zim Zum, formerly of the band Marilyn Manson.