Larsson is of Swedish origin, derived from the Old Norse word 'lauðr' meaning 'shaggy' or 'rough'. It was originally a nickname given to someone with unruly hair or a rough appearance. Today, Larsson is a common surname in Sweden, Norway, and Denmark. The name has gained international recognition due to its association with notable figures such as crime novelist Stieg Larsson.
In the year 2012, the name Larsson was given to five newborns, making it quite uncommon compared to other years with no recorded births under that name.