| Surname | Country | State | County or Province | From | To | Member |
|---|---|---|---|---|---|---|
| Napiorkowski | Russia/Poland | Rogowo Parish | Bydgoszcz Province | 1886 | 1904 | R003-1 |
| Napiorkowski | Russia/Poland | Skepe Parish | Bydgoszcz Province | R003-1 | ||
| Napiorkowski | Russia/Poland | Karnkowo Parish | Bydgoszcz Province | R003-1 | ||
| Napiorkowski | Russia/Poland | Ligowo Parish | Bydgoszcz Province | R003-1 | ||
| Napiorkowski | USA | Illinois | Cook County (Chicago) | 1904 | 1945 | R003-1 |
| Nash | USA | Illinois | Pope County | L006-1 | ||
| Nash | USA | Tennessee | Bedford County | L006-1 | ||
| Nason | USA | Maine | 1638 | 1703 | P012-1 | |
| Nasser | Syria | Bieurit | 1600 | present | P010-1 | |
| Nathan | Poland | 1880 | present | I002-1 | ||
| Nathan | USA | Illinois | Cook County | 1880 | present | I002-1 |
| Naus | Germany | D005-1 | ||||
| Naus | Belgium | D005-1 | ||||
| Navello/Lavello | France | Provence-Alpes-Côte-d'Azur | Alpes-Maritimes | 1490 | 1709 | J009-1 |
| Nebl | Yugoslavia | Bacs-Apatin | 1800 | present | A010-1 | |
| Nebl | Germany | Geinsheim | 1800 | present | A010-1 | |
| Nebl | USA | Wisconsin | 1800 | present | A010-1 | |
| Neiderer | Switzerland | Appenzell | 1750 | 1850 | B018-1 | |
| Neighbors | USA | Virginia | 1790 | 1820 | M011-1 | |
| Neilsen | Denmark | Ulsted | Alborg | 1830 | J009-1 | |
| Nelson | Sweden | bef 1871 | B019-1 | |||
| Nelson | USA | Iowa | Webster County | 1871 | 1925 | B019-1 |
| Nelson | USA | Calfornia | Los Angeles County | 1920 | 1940 | B019-1 |
| Nelson | Sweden | Skane | N006-1 | |||
| Nelson | USA | Iowa | N006-1 | |||
| Nettles | USA | Wisconsin | Milwaukee County | 1890 | 1920 | B003-1 |
| Neumeier | A010-1 | |||||
| Newman | Denmark | Moen | Frenderup | 1880 | J009-1 | |
| Newman | USA | Minnesota | 1957 | J009-1 | ||
| Newnam | USA | Indiana | LaGrange County | S033-2 | ||
| Newquist | USA | Iowa | Wapello County | 1870 | present | B019-1 |
| Newquist | Sweden | bef 1870 | B019-1 | |||
| Nickel(s) | Germany | Hesse-Nassan | Mademuhlen | G015-1 | ||
| Nickles | Germany | P013-1 | ||||
| Nickles | USA | Missouri | Marion County | P013-1 | ||
| Nielsen | Denmark | Fyn | Odense | 1852 | 1933 | J009-1 |
| Niepostyn | Poland | 1860 | present | M030-1 | ||
| Niepostyn | USA | IN | City LaPorte | 1860 | present | M030-1 |
| Niepostyn | USA | IL | City Chicago | 1860 | present | M030-1 |
| Nilsson | Sweden | bef 1871 | B019-1 | |||
| Noe | USA | New Jersey | Middlesex County | 1740 | present | D013-2 |
| Nohr | USA | Wisconsin | Brown County | C006-1 | ||
| Nolan | Ireland | County Cork | 1820 | ? | T004-2 | |
| Noonan | M031-1 | |||||
| Norman | Sweden | Kristianstad | 1800 | 1890 | J003-1 | |
| Norman | USA | Illinois | Cook County | 1890 | present | J003-1 |
| Norton | USA | SC | Spartansburg, Union County | 1830 | 1887 | B020-1 |
| Norton | Ireland | County Roscommon | 1800 | 1850 | N001-2 | |
| Norton | USA | Wisconsin | Monroe County | 1855 | 1950 | N001-2 |
| Norton | USA | NY | Monroe County | 1845 | 1855 | N001-2 |
| Nowaczyk | Poland | 1883 | Present | D016-1 | ||
| Nowaczyk | USA | Illinois | 1883 | Present | D016-1 | |
| Nyquist | Sweden | bef 1880 | A005-1 | |||
| Nyquist | USA | Illinois | 1880 | present | A005-1 | |
| Nyquist | Sweden | Odensjö | Kronoberg | bef 1870 | B019-1 |