First Tweet Sent

Date: March 21, 2006 • Location: Washington, United States

Jack Dorsey sent the first message on the social-media network Twitter.

Jack Patrick Dorsey is an American tech entrepreneur and businessman who co-founded Twitter, Inc., which operated social media service Twitter; financial technology company Block, Inc., which owns and operates Square, Cash App, Afterpay, Bitkey, and Tidal.

This milestone marked a defining occurrence in United States's and world history, leaving an indelible imprint on societal development, international relations, and cultural memory. Its enduring ramifications continue to be examined and commemorated by historians and scholars across the globe.