| Name | Date | Parish | Vol | Page | Father | Mother |
| OAKES, Edward | 5 Dec 1881 | Douglas | | 344 | OAKES, Edward Charles | GELLING, Susanna Ann |
| OATES, Alana Kathleen | 1 Apr 1898 | Malew | | 177 | OATES, William Hampton | CAIN, Margaret Elizabeth |
| OATES, Albert | 23 Jan 1887 | Douglas | | 626 | OATES, Frederick | COWELL, Elizabeth |
| OATES, Alfred | 28 May 1885 | Douglas | | 529 | OATES, Frederick | COWELL, Elizabeth |
| OATES, Amy Catherine | 11 Apr 1896 | Castletown | | 165 | OATES, Robert Clucas | KEIG, Louisa |
| OATES, Amy Evelyn | 3 Mar 1898 | Ger | | | OATES, William George | NELSON, Annie |
| OATES, Ann | 21 Aug 1884 | Malew | | 70 | OATES, Robert | KINNISH, Ann |
| OATES, Bertha | 16 Jul 1882 | Douglas | | 378 | OATES, Frederick | COWELL, Elizabeth |
| OATES, Catherine Ann | 5 Oct 1882 | Malew | | 50 | OATES, William | CAIN, Margaret Elizabeth |
| OATES, Eddie | 13 Jan 1891 | Malew | | 121 | OATES, William Hampton | CAIN, Margaret Elizabeth |
| OATES, Edith Margaret | 2 Apr 1895 | Douglas | | 1152 | OATES, John | GRAHAM, Mary |
| OATES, Edmund | 12 Aug 1882 | Rushen | | 80 | OATES, James | CORRIN, Jane |
| OATES, Edward | 2 Sep 1888 | Onchan | | 725 | Not given | OATES, Margaret |
| OATES, Edwin Alfred | 05-Apr-00 | Lezayre | | 100 | OATES, William George | MC CORMICK, Jane |
| OATES, Eliza Emily | 26 May 1880 | Onchan | | 269 | OATES, John James | CLAGUE, Eliza |
| OATES, Elizabeth | 14 Jul 1878 | Douglas | | 171 | OATES, Frederick | COWELL, Elizabeth |
| OATES, Emily | 7 Dec 1892 | Douglas | | 999 | OATES, Frederick | COWELL, Elizabeth |
| OATES, Ethel Margaret | 12 Jan 1899 | Douglas | | 1412 | OATES, Frederick William | CAIN, Ethel Catherine |
| OATES, Eunice | 6 Dec 1889 | Lon | | | OATES, William Henry | HIERN, Lucy Jane |
| OATES, Florence Mary | 17 May 1880 | Douglas | | 271 | OATES, Thomas | QUAYLE, Sarah |
| OATES, Frank | 1 Apr 1885 | Malew | | 75 | OATES, William Hamton | CAIN, Margaret Elizabeth |
| OATES, Freida | 18 Mar 1894 | Douglas | | 1084 | OATES, Frederick | COWELL, Elizabeth Elanor |
| OATES, Galine | 10 Mar 1887 | Rushen | | 151 | OATES, James | CORRIN, Jane |
| OATES, Henry | 25 Jun 1888 | Malew | | 101 | OATES, William Hampton | CAIN, Margaret Elizabeth |
| OATES, Henry | 14 Aug 1895 | Malew | | 157 | Not given | OATES, Elenor Jane |
| OATES, Hilda Jane | 30 Jun 1888 | Lon | | | OATES, William Henry | WALLACE, Blanche |
| OATES, James | 13 Jun 1888 | Malew | | 101 | OATES, Robert | KINNISH, Ann |
| OATES, James | 12 Aug 1898 | Douglas | | 1385 | OATES, Thomas William | O'NEIL, Annie |
| OATES, James Walter | 18 Jan 1897 | Douglas | | 1280 | OATES, John | GRAHAM, Mary |
| OATES, Jessie | 9 Mar 1894 | Pat | | | Not given, | MC KAY, Agnes |
| OATES, John Frederick | 06-Apr-00 | Douglas | | 1502 | OATES, William Frederick | CAIN, Ethel Catherine |
| OATES, John James | 26 Jun 1884 | Douglas | | 475 | OATES, Thomas | QUAYLE, Sarah |
| OATES, John Robert | 14 Apr 1895 | Malew | | 154 | OATES, Robert | FARGHER, Louisa Jane |
| OATES, John William | 22 Dec 1894 | Castletown | | 156 | OATES, Robert Clucas | KEIG, Louisa |
| OATES, John William | 18-Aug-00 | Douglas | | 1528 | OATES, John | GRAHAM, Mary |
| OATES, Leonard | 6 Oct 1888 | Douglas | | 735 | OATES, Thomas | QUAYLE, Sarah |
| OATES, Lilian Margery | 12 May 1896 | Malew | | 163 | OATES, William Hampton | CAIN, Margaret Elizabeth |
| OATES, Maggie | 13 Jun 1891 | Lon | | | OATES, William Henry | KINVIG, Emily Christian |
| OATES, Margaret Allis | 8 Aug 1879 | Malew | | 19 | OATES, Robert | KINNISH, Ann Jane |
| OATES, Margaret Ann | 13 Aug 1882 | Douglas | | 383 | OATES, Thomas | QUAYLE, Sarah |
| OATES, Margaret Ann | 21 Jun 1886 | Douglas | | 591 | OATES, Robert | KEWLEY, Margaret |
| OATES, Mary Frances | 12 Nov 1893 | Douglas | | 1062 | OATES, Robert | KEWLEY, Margaret Ann |
| OATES, Mona Issabel | 09-Oct-00 | Malew | | 196 | OATES, William Hampton | CAINE, Margaret Elizabeth |
| OATES, Robert | 20 Mar 1881 | Rushen | | 56 | OATES, James | CORRIN, Jane |
| OATES, Robert Albert | 8 Dec 1888 | Douglas | | 746 | OATES, Robert | KEWLEY, Margaret Ann |
| OATES, Robert Charles | 14 Dec 1886 | Douglas | | 620 | OATES, Thomas | QUAYLE, Sarah |
| OATES, Robert Daniel | 28 Nov 1882 | Douglas | | 397 | OATES, Robert | KEWLEY, Margaret |
| OATES, Robert James | 25 Jan 1881 | Douglas | | 302 | OATES, Frederick | COWELL, Elizabeth |
| OATES, Robert James | 14-Jan-00 | Castletown | | 190 | OATES, Robert Clucas | KEIG, Louisa |
| OATES, Sarah Elizabeth | 17 Nov 1899 | Douglas | | 1471 | OATES, William Henry | COWLEY, Eleanor Catherine |
| OATES, Sarah Jane | 5 Aug 1891 | Douglas | | 917 | OATES, Thomas | QUAYLE, Sarah |
| OATES, Thomas | 1 May 1896 | Malew | | 163 | OATES, Robert | FARGHER, Louisa Jane |
| OATES, Thomas Ambrose | 7 Jan 1899 | Malew | | 184 | Not given | OATES, Lilian |
| OATES, Thomas Christop | 11 Mar 1881 | Malew | | 36 | OATES, Robert | KINNISH, Ann |
| OATES, Thomas Joseph | 8 Jul 1878 | Rushen | | 4 | OATES, James | CORRIN, Jane |
| OATES, Tom Hampton | 28-Feb-01 | Castletown | | 195 | OATES, Robert Clucas | KEIG, Louisa |
| OATES, Vida Constance | 6 Nov 1899 | Douglas | | 1474 | OATES, James | CORRIN, Jane |
| OATES, Walter | 1 Sep 1890 | Douglas | | 856 | OATES, Frederick | COWELL, Elizabeth Eleanor |
| OATES, Walter Herbert | 16 Apr 1890 | Douglas | | 836 | OATES, Thomas | QUAYLE, Sarah |
| OATES, William Henry | 26 May 1896 | Pee | | | OATES, William George | CALEY, Eliza |
| OATES, William Jaes | 13 Dec 1892 | Lon | | | OATES, William Henry | KNEALE, Ann |
| OATES, William James | 23 Sep 1899 | Malew | | 188 | OATES, Robert | FARGHER, Louisa Jane |
| OATES, William Robert | 27 Apr 1887 | Malew | | 93 | OATES, William Hamton | CAIN, Margaret Elizabeth |
| OATS, Jessie Isabel | 13 Aug 1880 | Pat | | | Not given, | RADCLIFFE, Mary Ellen |
| O'BRIEN, Daniel John | 10 Apr 1878 | Douglas | | 157 | O'BRIEN, Michael | SLOANE, Elizabeth Mary Har |
| O'BRIEN, Elizabeth | 14 Aug 1852 | Douglas | | 10 | O'BRIEN, Francis | BIRLEY, Isabella |
| O'CONNOR, Catherine | 15 Apr 1882 | Douglas | | 368 | O'CONNOR, Philip | MC ARDLE, Emily |
| O'CONNOR, John | 15 May 1881 | Douglas | | 316 | O'CONNOR, John | CASEY, Annie |
| O'CONNOR, Margaret Ann | 20 Aug 1886 | Douglas | | 603 | O'CONNOR, Philip | MC ARDLE, Emily |
| O'CONNOR, Mary | 27 Apr 1879 | Douglas | | 210 | O'CONNOR, John | CASEY, Annie |
| O'CONNOR, Mary | 10 May 1884 | Douglas | | 472 | O'CONNOR, Philip | MC ARDLE, Emily |
| O'CONNOR, Mary Ellen | 25 May 1879 | Douglas | | 211 | O'CONNOR, Michael | RONEY, Mary |
| O'CONNOR, William Jame | 8 Jan 1880 | Douglas | | 253 | O'CONNOR, Philip | MC ARDLE, Emily |
| O'DAUGHERTY, Hannah Ja | 19 Mar 1884 | Ramsey | | 144 | O'DAUGHERTY, Michael | ROGERS/DORA, Mary Jane |
| ODGEN, Douglas | 10 Dec 1872 | Douglas | | 127 | ODGEN, Edward | MORDANT, Margaret Cannon |
| OGDEN, Adelaide | 19 Jul 1870 | Douglas | | 118 | OGDEN, Edward | MORDANT, Margaret Cannon |
| OGDEN, Frederick Willi | 1 Oct 1868 | Douglas | | 109 | OGDEN, Edward | MORDANT, Margaret Connon |
| OGLE, John Neveille | 10 Jun 1896 | Bal | | | OGLE, Swan Harrison | HESLING, Ann |
| O'HARA, Ann | 1 Oct 1880 | Onchan | | 292 | O'HARA, Edward | MAGUIRE, Ellen |
| O'HARA, Elizabeth Amy | 10 Dec 1885 | Douglas | | 558 | O'HARA, Richard | JACKSON, Ellen |
| O'HARA, James Alfred | 15 Oct 1882 | Douglas | | 390 | O'HARA, Richard | JACKSON, Eleanor |
| O'HARA, John Herbert | 29 Sep 1889 | Douglas | | 802 | O'HARA, Richard | JACKSON, Ellen |
| O'HARA, Margaret Ellen | 8 Dec 1879 | Douglas | | 247 | O'HARA, Richard | JACKSON, Ellenor |
| O'HARE, John | 7 Aug 1899 | Douglas | | 1449 | O'HARE, Luke | LINDSAY, Isabella |
| O'HARE, Margaret | 1 Oct 1897 | Douglas | | 1322 | O'HARE, Luke | LINDSAY, Isabella |
| O'KEEFE, Mary Anne | 19 Jan 1880 | Castletown | | 39 | O'KEEFE, John | SHENAGHAN, Mary Ann |
| O'KEEFFE, William Jame | 28 Jun 1881 | Douglas | | 323 | O'KEEFFE, William | MC ELROY, Mary Ann |
| OKELL, Ada Margaret | 14 Jul 1881 | Douglas | | 326 | OKELL, William Henry | BROADBENT, Ada |
| OKELL, Alfred William | 1 Mar 1880 | Douglas | | 258 | OKELL, William Henry | BROADBENT, Ada |
| OKELL, Charles Cyril | 10 Dec 1888 | Douglas | | 744 | OKELL, Charles Percy | KINLEY, Marianne |
| OKELL, William | 30 Jan 1892 | Douglas | | 950 | OKELL, Charles Percy | KINLEY, Marianne |
| OLD, John William | 22 Nov 1896 | Douglas | | 1265 | OLD, John | LANGSTON, Charlotte |
| OLIPHANT, Catherine An | 26 Jan 1888 | Ramsey | | 212 | OLIPHANT, Joshua | CORKILL, Catherine |
| OLIPHANT, Eleanor Jane | 6 Feb 1886 | Ramsey | | 179 | OLIPHANT, Joshua | CORKILL, Catherine |
| OLIPHANT, Ethel Made | 2 Oct 1895 | Ramsey | | 349 | OLIPHANT, Joshua | CORKILL, Catherine |
| OLIPHANT, Florence Mar | 19 Jun 1892 | Ramsey | | 294 | OLIPHANT, Joshua | CORKILL, Catherine |
| OLIPHANT, Lilian Mildr | 23 Sep 1899 | Ramsey | | 411 | OLIPHANT, Joshua | CORKILL, Catherine |
| OLIPHANT, William Henr | 28 Apr 1890 | Ramsey | | 255 | OLIPHANT, Joshua | CORKILL, Catherine |
| OLIVE, Charles Ernet | 23 Mar 1881 | Bra | | | OLIVE, John | GAWNE, Elizabeth |
| OLIVER, Benjamin | 10 Nov 1890 | Lon | | | OLIVER, John | LACE, Ellen |
| OLIVER, Elijah | 10 May 1885 | Lon | | | OLIVER, John | LACE, Ellen |
| OLIVER, Joshua Elliot | 3 Jan 1882 | Lonan | | 44 | OLIVER, John | CORKILL, Elizabeth |
| OLIVER, Mary Alberta | 10 Mar 1896 | Castletown | | 165 | OLIVER, Richard | TATE, Mary Ellen |
| OLIVER, Sarah Eleanor | 28 Oct 1897 | Castletown | | 176 | OLIVER, Richard | TATE, Mary Ellen |
| OLIVER, Stephen Corkil | 11 Oct 1879 | Lonan | | 19 | OLIVER, John | CORKILL, Elizabeth |
| O'MALLEY, Grace Hilda | 24 Jun 1892 | Douglas | | 971 | O'MALLEY, David Joseph | SANSON, Ellen Mary |
| O'MALLEY, Wilfrid Patr | 16 Jul 1894 | Douglas | | 1104 | O'MALLEY, David Joseph | SANSOM, Ellen Mary |
| O'NEIL, James | 6 May 1886 | Douglas | | 584 | O'NEIL, John | RUSSELL, Margaret |
| O'NEIL, Thomas | 22 Jan 1884 | Douglas | | 454 | O'NEIL, John | RUSSELL, Margaret |
| O'NEILL, Florence Eliz | 14 Jun 1890 | Douglas | | 850 | O'NEILL, Charles | MAY, Alice |
| O'NEILL, John | 18 Jan 1880 | Douglas | | 249 | O'NEILL, John | RUSSELL, Margaret |
| O'NEILL, Lillian Ursal | 11 Oct 1894 | Douglas | | 1118 | O'NEILL, Thomas | GREGSON, Margaret Leah |
| O'NEILL, Mary Honora | 17 Feb 1882 | Douglas | | 358 | O'NEILL, John | RUSSELL, Margaret |
| O'NEILL, Nora | 3 Feb 1885 | Douglas | | 512 | O'NEILL, James | CARTER, Annie Elizabeth |
| ORAM, Annie | 25 Mar 1899 | Ramsey | | 403 | ORAM, Alfred | NELSON, Frances Jane |
| ORAM, Louisa | 25 Mar 1899 | Ramsey | | 403 | ORAM, Alfred | NELSON, Frances Jane |
| ORE, May Garnett | 25 May 1896 | Arbory | | 256 | ORE, William | HALL, Mary Ann |
| ORMSTEAD, Edith Mary | 7 Dec 1878 | German | A1 | 72 | | ORMSTEAD, Catherine |
| ORR, Gladys | 22 Jun 1894 | Lon | | | ORR, Samuel | BARRON, Sarah |
| ORR, Samuel | 25 Mar 1896 | Lon | | | ORR, Samuel | NORTON, Louisa |
| OSBORNE, Annie | 30 Jun 1898 | Douglas | | 1377 | OSBORNE, Thomas | COWELL, Annie |
| OSBORNE, George | 30 Aug 1879 | Onchan | | 228 | OSBORNE, George | CLARKE, Ann |
| OSBORNE, Joseph Herber | 27 Nov 1877 | Onchan | | 153 | OSBORNE, George | CLARK, Ann |
| OSBORNE, Lily | 11 Jan 1895 | Douglas | | 1134 | Not given | OSBORNE, Lottie |
| OSBORNE, Lottie | 15 Oct 1895 | Douglas | | 1188 | OSBORNE, Thomas | COWELL, Annie |
| OSBORNE, Myra Annie Bl | 9 Jul 1873 | Douglas | | 129 | OSBORNE, George | CLARK, Ann |
| OSBORNE, William | 9 Apr 1897 | Douglas | | 1295 | OSBORNE, Thomas | COWELL, Annie |
| OSBORNE, William Marcu | 23 Jan 1885 | Rushen | | 119 | OSBORNE, William | ABBEY, Isabel |
| OSBOURNE, Abraham Good | 26 Feb 1875 | Onchan | | 137 | OSBOURNE, George | CLARKE, Ann |
| OSBOURNE, William | 25 Jul 1894 | Douglas | | 1115 | OSBOURNE, Thomas | COWELL, Annie |
| O'SHAUGHNESSY, James T | 10 Sep 1899 | Douglas | | 1458 | O'SHAUGHNESSY, James | HANNAH, Jane |
| O'SHAUGHNESSY, John Da | 28 Mar 1896 | Douglas | | 1217 | O'SHAUGHNESSY, James | HANNAH, Jane |
| O'SHAUGHNESSY, Mary An | 25 May 1897 | Douglas | | 1300 | O'SHAUGHNESSY, James | HANNAH, Jane |
| O'SHEA, May Frances | 28 Jul 1883 | Douglas | | 432 | O'SHEA, James Francis | DUNKIN, Mary Jane |
| O'SHEA, William | 29 Sep 1898 | Douglas | | 1391 | Not given | O'SHEA, Annie |
| O'SHEA, Winifred | 24 Apr 1887 | Douglas | | 640 | O'SHEA, Francis James | DUNKIN, Mary Jane |
| OSHEE, Thomas | 14 Nov 1897 | Andreas | | 140 | Not given | OSHEE, Annie |
| OTTERSON, Francis | 16 Nov 1888 | Douglas | | 741 | OTTERSON, Francis | GEOGHEGAN, Lizzie |
| OTTERSON, Rose Alice | 26 Dec 1886 | Douglas | | 619 | OTTERSON, Francis | GEOGHEGAN, Lizzie |
| OTTERSON, Thomas Josep | 4 Sep 1891 | Douglas | | 927 | OTTERSON, Francis | GEOGHEGAN, Elizabeth |
| OTTERSON, William Jame | 4 Nov 1884 | Douglas | | 496 | OTTERSON, Francis | GEOGHEGAN, Elizabeth |
| OUTRAM, Estella Mary E | 21 Jan 1889 | Castletown | | 112 | OUTRAM, Robertson Rogers | CAVENDISH, Adelina Louisa |
| OWEN, Arthur Richrd | 6 Jul 1887 | Fox | | | OWEN, Joseph | KEIG, Louisa |
| OWENS, Gladys Mona | 1 Aug 1890 | Douglas | | 854 | Not given | OWENS, Annie |
| OWENS, Jessie Ellen | 1 Aug 1891 | Douglas | | 919 | OWENS, John Frederick | FARAGHER, Emily |
| OWENS, Mabel | 19 Oct 1892 | Douglas | | 991 | OWENS, John Frederick | FARAGHER, Emily |
| OXENFORD, William More | 24 Jul 1886 | Onchan | | 591 | OXENFORD, Walter Henry | JONES, Ada |