Over the past 110 years, 44 983 girls have been named Janis. The name Janis ranks 560th in the United States among the most common names for girls. For the first time more than ten times newborns were named Janis in 1914. The peak of popularity of the name Janis came in the 1940s and 1950s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.