Dich Ingar Emil Roggen (born 26 April 1934 in Valencia, Spain) is a Norwegian sociologist, and has been described as one of the European social informatics pioneers. His field of work is focused on the social aspects of virtual space, the social analysis of the Internet, the interaction between man and computer, and with the implications of the information technology usage communication in all fields of society. In 1996 he introduced the Sociology of the World Wide Web (web sociology) as a web science, based on the principles of social informatics.