Robby is of American origin, derived from the Germanic name Robert. It means "bright fame" or "shining fame," which reflects its association with the Norman French 'rober' meaning "fame" and the Germanic 'hrod' meaning "renown." Robby has been a popular name in various countries, including the United States, Canada, and Australia.
The name Robby experienced varied popularity throughout the decades, with notable peaks in the mid-1960s and again in the late 1980s. The highest number of births recorded was 12 in 1964, while some years saw as few as 5 births. Overall, there were a total of 215 babies named Robby between 1921 and 1985.