Nils \n(i)-ls\ as a boy's name is a variant of Nelson and Nicholas (Greek), and the meaning of Nils is "people of victory".
The baby name Nils sounds like Niles, Nels, Neils, Nilos and Niels. Other similar baby names are Nile, Neil, Giles, Jiles, Miles, Mills, Niel, Niall, Nial, Neill, Neile, Nilson, Niaz, Nikos, Niklos, Niklas, Nicos, Nyles, Noll, Silas, Sills and Wills.