Lang is a Germanic name derived from "lang," meaning "long" or associated with "hlang," meaning "strong/powerful". It's been used historically in various forms across languages, including Norse mythology's god Lango and Scottish Clan MacLang. In royalty, French king Louis IX took the surname Lang, while Norwegian king Haakon VII adopted it upon ascension. Today, Lang is still used globally, often associated with strength or length/journeys.