Olle is an old Norse name. It has been traditionally given to boys. The meaning of Olle is 'old person'. It is considered a diminutive of Olaf. It's a popular name in Sweden, regularly making the top 30 name lists in the country. In 2021, it was the 33rd most popular name in Sweden. It's also fairly common in the Netherlands. It's rare in the UK, US, and other English-speaking countries; unless there is a strong contingent of Swedish living in the country. It hasn't been adopted by English speakers, and the way trends are going, they're unlikely to adopt it soon. However, the Disney movie 'Frozen' has made the name Olaf popular.