Who invented HTML?

Tim Berners-Lee developed the ENQUIRE language in 1980. He and Robert Cailliau created the World Wide Web project, which was supposed to establish an easy-to-use language to share data. They eventually developed HTML over time, using ENQUIRE as a model. The first version of HTML that made itself into an RFC -- making it a specific web standard -- was HTML 2.0, which was released in 1995.