Ragna is a Norwegian name of Old Norse origin, meaning "advice" or "decision". It was often used among the Vikings and has been traditionally popular in Norway, Sweden, and Denmark. The name Ragna also appears in Icelandic literature, notably in the famous epic poem "Njal's Saga".
The name Ragna experienced fluctuations in popularity during the late 19th and early 20th centuries, with notable peaks in certain years but overall declining use over time. The highest number of births recorded was 18 in 1915, while there were periods of no recorded births, such as between 1886 and 1887, 1891 and 1892, and from 1902 to 1903. The total number of births over this period was 201.