List of Genera
- Newportides Chamberlin, 1921
- Nicopus Attems, 1947
- Nipponobius Chamberlin, 1929
- Nodobius Chamberlin, 1952
- Nodocephalus Attems, 1928
- Nothembius Chamberlin, 1916
- Nothobius Cook, 1899
- Nothogeophilus Lewis, Jones & Keay, 1988
- Notiasemus L.E. Koch, 1985
- Notiphilides Latzel, 1880
- Notiphilus C.L. Koch, 1847
- Novaralius Attems, 1947
- Nuevobius Chamberlin, 1941
- Nuevona Chamberlin, 1941
- Nycternyssa Crabill, 1959
- Nyctunguis Chamberlin, 1914
- Oabius Chamberlin, 1913
- Oligna Chamberlin, 1943
- Oligobothrus Latzel, 1880
- Onebius Chamberlin, 1926
- Onychopodogaster Verhoeff, 1902
- Opisthemega Wood, 1862
- Oranobius Verhoeff, 1936
- Orinomerium Chamberlin, 1955
- Orinomus Attems, 1895
