- Nolle
- Nolte
- Noonburg
- Julia M. Born: October 16, 1878, Died: 1955
- Norkett
- Norris
- North
- Northaus
- Norton
- Noto
- Novelli
- Noviello
- Nubile
- Nudo
- Nunziella
- Nuss
- Oakes
- Oaks
- Oberlies
- Maria Born: 1834, Died: 1913
- Oberman
- O'Bert
- Ockenburg
- Bertha Sophia Born: August 2, 1856, Died: January 17, 1858
- Hendricus Hubertus Born: February 28, 1820, Died: April 16, 1882
- Hendricus Hubertus Born: December 17, 1847, Died: February 10, 1911
- Johannes Born: 1787
- Johannes Gerardus Born: October 20, 1850, Died: April 10, 1914
- Maria Dorothea Born: May 20, 1861, Died: November 29, 1865
- Willemina Born: May 1840, Died: October 5, 1840
- Willemina Born: May 20, 1845
- Willemina Deliana Jacoba Hendrika Born: October 22, 1871
- Willemina Theodora Gerarda Born: December 24, 1853, Died: November 14, 1859
- O'Connor
- O'Dell
- O'Donnell
- Margaret V. Born: 1905, Died: December 5, 1955
- Winifred Born: August 1896, Died: December 28, 1970
- O'Dowd
- Oehler
- Oerke
- August C. Born: 1870, Died: 1929
- Matilda Born: August 14, 1898, Died: May 23, 1990
- Oeschner
- Ofofino
- O'Gara
- Ann Marie Born: July 21, 1933, Died: July 10, 2013
- Catherine
- Edward, Jr. Born: September 27, 1906, Died: March 13, 1977
- Edward J., Sr. Born: 1878, Died: June 7, 1922
- Edward J. Born: 1938, Died: 1953
- James M. Born: May 26, 1943, Died: November 4, 1990
- Margaret T. Born: October 28, 1902, Died: September 11, 1938
- Thomas Fulton
- Thomas Patrick Born: September 21, 1909, Died: September 6, 1988
- Ogle
- O'Grady
- Ohm
- Ohren
- Okänd "Unknown"
- Oldenettel
- Olivio
- Olofsdotter
- Olson
- O'Neil
- O'Neill
- Onorata
- Oppenheim
- Orchard
- Orcutt
- Alexis
- Anna Marie Born: October 17, 1915, Died: June 1, 2010
- Daniel
- Dean
- Dennis
- Donald Lee, Sr. Born: August 1, 1927, Died: October 8, 1992
- Donald Lee, Jr. Born: September 5, 1949, Died: April 16, 2018
- Edward, (Dr.)
- Elmer Ellsworth Born: 1863, Died: 1944
- Elmer Thomas Born: June 10, 1930, Died: September 14, 1931
- Genevieve Hope Born: September 13, 1920, Died: May 30, 2006
- Georgia Mae Born: November 13, 1917, Died: October 9, 2009
- Glen Rusty Born: August 13, 1949, Died: August 16, 2008
- Glenda
- Glenn Hope Born: March 22, 1896, Died: October 16, 1962
- Glenn John Born: August 17, 1923, Died: October 4, 2001
- Jill
- John Elmer Born: November 22, 1935, Died: March 18, 2022
- Joyce Fay Born: August 16, 1919, Died: September 27, 1999
- Kayleigh
- Paul
- Orlando
- Orlandro
- Ormiston
- Elmer Died: July 28, 1975
- Orofino
- Orsillo
- Agnesa Pellegrina Born: September 15, 1851
- Alberico "Albert" Born: October 19, 1915, Died: March 4, 1983
- Angelo Raffaele Born: June 10, 1885
- Anna
- Anthony Born: December 19, 1911, Died: March 13, 2011
- Antonio
- Antonio Born: 1783
- Antonio Born: 1808, Died: September 24, 1837
- Antonio Born: July 10, 1849
- Cosimo Born: 1806, Died: February 19, 1842
- Filomena Born: April 4, 1887
- Francesco
- Francesco Born: December 30, 1876
- Francesco "Frank" Born: March 1, 1882
- Francesco Pasquale Born: May 17, 1814
- Frank Born: 1933
- Giuseppe Born: February 28, 1875
- John Born: June 11, 1919
- John Anthony
- Joseph Richard Born: February 3, 1926
- Lena "Lee" Born: 1924
- Lina "Filomena" Born: May 28, 1917, Died: August 10, 2015
- Lucille Born: September 20, 1912, Died: March 1, 2009
- Maria Anna Born: January 1, 1818
- Maria Girolama Born: February 17, 1810
- Maria Giuseppa Born: 1815, Died: January 4, 1819
- Maria Teresa Born: May 30, 1856
- Mariantonia Born: January 1, 1818
- Mariateresa Born: 1806
- Michael Born: 1930
- Michele Born: 1770, Died: September 23, 1837
- Michele Born: September 16, 1852
- Michele Born: October 6, 1858
- Nicola Born: May 5, 1821
- Pasquale
- Pellegrina Born: 1797
- Pellegrino Andrea Born: 1819, Died: December 22, 1821
- Teresa
- Vittoria
- Orsini
- Ortt
- Ory
- Osborne
- Osenburg
- Ospedale
- Oswald
- Otis
- Otto
- Ovens
- Charley J. Born: August 1894
- Clara Elfrieda Born: September 19, 1899, Died: September 3, 1959
- Edna Margaretha Born: January 20, 1897
- Frank Otto Born: January 15, 1895, Died: August 12, 1939
- Johannes Hermann Born: April 6, 1865, Died: January 16, 1910
- Peter
- Peter, Jr. Born: 1919
- Peter Carl Born: August 7, 1893, Died: December 17, 1942
- Phyllis Born: 1924
- Owens
- Owsley
- Edna A. Born: February 13, 1859, Died: October 18, 1859
- Eva Jane Born: July 27, 1868, Died: January 28, 1923
- Isaac B. Born: October 8, 1860, Died: April 18, 1861
- Mary Lucy Born: August 26, 1866, Died: May 26, 1927
- Sarah Ann Born: February 16, 1863, Died: September 13, 1864
- Thomas Born: 1806, Died: 1882
- William Born: June 14, 1834, Died: June 8, 1876