Robert Adrian (1935–2015), also known as Robert Adrian X, was a Canadian artist who made radio and telecommunications art.
Adrian moved from Canada to Vienna, Austria in 1972 where he became known for creating experimental artworks using radio and communications technologies.
His work The World in 24 Hours, which connected artists in different cities and continents through telephone lines and radio, is considered to be one of the first experiments in online culture.
Adrian is considered to be a pioneer in the field of telecommunications art and media art.