| Olive "Ollie" Christina (Hagenbuch) Hollingsworth | 8 Jul 1894 | 27 Oct 1984 |
| Oliver Wendell Hagenbuch | 15 Apr 1905 | 13 Oct 1991 |
| Olivia (Wentz) Hagenbuch | 10 Aug 1947 | 21 Jun 2004 |
| Owen Hagenbuch | 31 Jan 1822 | 13 Jul 1896 |
| Pamela Ann Hagenbuch | 5 Mar 1966 | |
| Parke Scrivner Hagenbuch | 2 Dec 1918 | 5 Jun 1927 |
| Patricia Ann (Hagenbuch) French | | |
| Patricia Ann (Philippi) Hagenbuch | 4 Nov 1942 | 17 Aug 2021 |
| Patricia Ann (Hagenbuch) Thomas | | |
| Patricia Ida (Madden) Hagenbuch, Johnson | 24 Sep 1930 | 7 Jan 2015 |
| Patricia M. (McMahon) Hagenbuch | | |
| Patricia "Pat" Mae (Stafford) Hagenbuch | 19 Apr 1946 | 8 Sep 2012 |
| Patty Lou Hagenbuch | 9 Apr 1935 | 6 Dec 2015 |
| Paul Alan Hagenbuch | | |
| Paul Allen Hagenbuch, Sr. | 3 Sep 1918 | 17 Feb 1987 |
| Paul Allen Hagenbuch, Jr./SGT. | 16 Jan 1946 | 30 Apr 2015 |
| Paul D. Hagenbuch | 22 Mar 1912 | 9 May 2003 |
| Paul E. Hagenbuch | 1894 | 1973 |
| Paul Frederick Hagenbuch | 13 Jan 1918 | 8 Jul 1982 |
| Paul Gideon Hagenbuch, Sr. | 23 May 1894 | 31 Jan 1982 |