Meaning and Name Origin
Magnus \mag-nus\ as a boys' name is pronounced MAG-ness. It is of Latin origin, and the meaning of Magnus is "great". A royal name in Norway and Denmark; also a saint's name. The name was introduced from Scandinavia to Scotland.
For more information, see also the related boy name Maxwell.
Magnus is an unusual given name for males but a very prominent surname for all people (#13720 out of 88799, Top 15%). (2000 U.S. Census)
Shown below is the baby name popularity of Magnus for boys. Magnus entered the list in 1900-1909 and reached its highest position of #902 in the U.S. then, and is at #977 currently. (2014 Birth Statistics)
Below is a graphed analysis of the popularity of the boy name Magnus and related names. The only other prominent alternative form of Magnus (#977 in 2014) rated in the Top 1000 is Maxwell (#107 in 2014). These boy names reached the peak of their popularity in 2013 and are almost as popular today. Maxwell (#107) is the most trendy birth name here, with this name undergoing a resurgence in popularity. (2014 Birth Statistics)
A recommended similar baby name is Magus. Like Magnus, this name is not frequently used.