InfoWorld (abbreviated IW) is an American information technology media business. Founded in 1978, it began as a monthly magazine. In 2007, it transitioned to a web-only publication. Its parent company today is International Data Group, and its sister publications include Macworld and PC World. InfoWorld is based in San Francisco, with contributors and supporting staff based across the U.S..

Since its founding, InfoWorld's readership has largely consisted of IT and business professionals. InfoWorld focuses on how-to, analysis, and editorial content from a mixture of experienced technology journalists and working technology practitioners. The site averages 4.6 million monthly page views and 1.1 million monthly unique visitors.