* O'Farrel, David M. -- Received 1836
* O'Fling, Edmund -- Received 1818, Expelled 1836
* O'Kelly, James -- Received 1778, Withdrew 1793
* Oakchiah, William Winans, -- Received 1831, Located 1835 * Oakley, Peter C. -- Received 1824
* Ogburn, Hugh E. -- Received 1838
* Ogden, Benjamin -- Received 1786, Died 1834
* Ogden, Henry -- Received 1779, Located 1790
* Ogden, Pharoah A. -- Received 1825, Located 1837
* Oglesby, Joseph -- Received 1803, Located 1836
* Oglesby, Joshua -- Received 1804, Located 1810
* Ogletree Philemon, -- Received 1812, Located 1820
* Ogletree, Benjamin S, -- Received 1811, Located 1815 * Oldrin, E. -- Received 1831
* Olin, Charles -- Received 1835
* Olin, Stephen -- Received 1824
* Oliver, John L. -- Received 1827, Located 1838
* Oliver, Warner -- Received 1836
* Onins, John D. -- Received 1835
* Oram, Gassaway -- Received 1838
* Orcott, Asa -- Received 1821
* Orem, Edward -- Received 1819, Died 1821
* Ormond, William -- Received 1791, Died 1803
* Orr, Wasington -- Received 1818, Located 1823
* Osband, Gideon -- Received 1828
* Osband, Wilson -- Received 1833
* Osbon, Abiathar M. -- Received 1829
* Osborn, David -- Received 1834
* Osborn, Elbert -- Received 1823
* Osborn, Joseph -- Received 1800, Died 1835
* Osborn, Theron -- Received 1834
* Osborn, Van Rensselaer, -- Received 1813, Located 1823 * Osborne, John W. -- Received 1833
* Oslin, Reuben E. -- Received 1837
* Ostrander, Daniel -- Received 1793
* Ostrandor, Daniel B. -- Received 1832, Located 1837 * Otheman, Bartholomew -- Received 1814
* Otheman, Edward -- Received 1835
* Otis, Erastus -- Received 1805, Located 1814
* Otwell, Stith M. -- Received 1826
* Outten, William -- Received 1833, Died 1835
* Overall, Lorenzo D. -- Received 1822, Located 1833 * Overall, Abraham -- Received 1821, Located 1837
* Overall, Nace -- Received 1814, Located 1818
* Overby, Richard -- Received 1831, Located 1834
* Owen, Francis A. -- Received 1822, Located 1836
* Owen, Abraham -- Received 1836
* Owen, Anning -- Received 1796, Died 1814
* Owen, Ebenezer -- Received 1837
* Owen, Isaac -- Received 1834
* Owen, James P. -- Received 1832
* Owen, John -- Received 1805, Located 1812
* Owen, Richardson, -- Received 1805, Located 1808
* Owen, Thomas -- Received 1813
* Owen, Travis -- Received 1814, Located 1825
* Owen, William -- Received 1804, Located 1810
* Ozier, Jacob -- Received 1826, Located 1837