| O’Brien | Helen | St Mary’s | Fairy 1971, Fairy 1973, Flower Girl 1975, Presentee 1976, Maid of Honour 1978 |
| O’Brien | Paul | St Mary’s | Presentee 1972 |
| O’Brien | Susan | St Mary’s | Fairy 1972, Fairy 1974, Presentee 1977 |
| O’Connor | Bethany | St Mary’s | Fairy 2005, Flower Girl 2007, Presentee 2009 |
| O’Connor | Catriona | St Mary’s | Fairy 2002, Flower Girl 2004, Queen of the Fairies 2008 |
| O’Connor | Gillian | St Mary’s | Presentee 1999 |
| O’Connor | Robert | Grange | Presentee 1965 |
| O’Connor | Sanchia | St Mary’s | Flower Girl 2000, Lady in Waiting 2003 |
| O’Connor | Tracy | Grange | Flower Girl 1986 |
| O’Donnell | Katie | Public | Flower Girl 2016 |
| O’Donnell | Laura | Deanburn | Presentee 1994 |
| O’Donnell | Maureen | Academy | Lady in Waiting 1949 |
| O’Donohue | Michael | St Mary’s | Presentee 1995 |
| O’Donohue | Paige | Kinneil | Fairy 2014 |
| O’Donohue | Shaun | St Mary’s | Queen’s Page 1988 |
| O’Donovan | Aine | St Mary’s | Fairy 2012, Flower Girl 2014, Presentee 2016 |
| O’Hara | Agnes | St Mary’s | Flower Girl 1957 |
| O’Hara | Alison | St Mary’s | Flower Girl 1948 |
| O’Hara | Elaine | Public | Flower Girl 1975, Presentee 1976 |
| O’Hara | Graeme | Deanburn | Queen’s Page 1984 |
| O’Neil | Agnes | St Mary’s | Flower Girl 1949 |
| O’Neil | Ben | Public | Presentee 2012 |
| O’Neil | Brian | Grange | Queen’s Champion 1981 |
| O’Neil | Bryce | Public | Presentee 2011 |
| O’Neil | Cory | Public | Queen’s Page 2012, Presentee 2015, Queen’s Herald 2017 |
| O’Neil | Derek | St Mary’s | Presentee 1972, Yeoman of the Guard 1973 |
| O’Neil | Fiona | Grange | Fairy 1995, Queen of the Flower Girls 2001 |
| O’Neil | Helen | St Mary’s | Flower Girl 1957 |
| O’Neil | Jill | Public | Flower Girl 1971 |
| O’Neil | Keighan | Kinneil | Guard of Honour 2015 |
| O’Neil | Margaret | Grange | Fairy 1972 |
| O’Neil | Margaret | St Mary’s | Maid of Honour 1948 |
| O’Neil | Margaret Anne | Grange | Flower Girl 2002 |
| O’Neil | Shirley | Grange | Fairy 1983, Queen of the Flower Girls 1986 |
| O’Neill | Alan | Public | Presentee 1970 |
| O’Neill | Catherine | St Mary’s | Flower Girl 1963 |
| O’Neill | Catriona | Public | Flower Girl 1999 |
| O’Neill | Christine | Public | Maid of Honour 1967 |
| O’Neill | Christine | St Mary’s | Flower Girl 1970 |
| O’Neill | Declan | Kinneil | Presentee 2016 |
| O’Neill | Jemima | St Mary’s | Fairy 1936 |
| O’Neill | Jessica | Public | Flower Girl 2006, Presentee 2008 |
| O’Neill | John | St Mary’s | Presentee 1961 |
| O’Neill | Sam | Public | Presentee 2010 |
| O’Sullivan | Betty | St Mary’s | Flower Girl 1923, Maid of Honour 1924 |
| O’Sullivan | Teresa | St Mary’s | Flower Girl 1928 |
| O’Toole | Catherine | St Mary’s | Flower Girl 1961, Maid of Honour 1963 |
| O’Toole | Jane | St Mary’s | Flower Girl 1962, Lady in Waiting 1963 |
| Ogg | Anna | Public | Fairy 1954 |
| Ogg | James | Grange | Lord in Waiting 1929 |
| Ogg | Jamie | Deanburn | Presentee 2012, Queens Champion 2014 |
| Ogg | Janet | Public | Flower Girl 1947 |
| Ogg | Lesley | Kinneil | Flower Girl 1982 |
| Ogg | Margaret | Kinneil | Fairy 1958 |
| Ogg | Marion | Academy | Flower Girl 1954 |
| Ogilvie | Rebecca | Public | Flower Girl 2006 |
| Ogston | Karen | Kinneil | Fairy 1992, Presentee 1994 |
| Ogston | Stuart | Kinneil | Presentee 1996 |
| Old | Catherine | Grange | Flower Girl 1946 |
| Oldham | Ashley | Public | Fairy 1992, Queen 1997, Ex-Queen 1998 |
| Oldham | Margaret | Public | Flower Girl 1938 |
| Oliver | Alyson | Kinneil | Flower Girl 1993 |
| Oliver | Arlene | Deanburn | Presentee 1976, Presentee 1979 |
| Oliver | Carolyn | Deanburn | Flower Girl 1980 |
| Oliver | David | Grange | Presentee 1984 |
| Oliver Oliver |
Gillian Gray |
Public Public |
Fairy 1979, Lady in Waiting 1982 Queen’s Page 2017 |
| Oliver | Jade | St Mary’s | Flower Girl 2003 |
| Oliver | Laurie | Deanburn | Fairy 1981 |
| Oliver | Lynn | Public | Fairy 1975 |
| Oliver | Raymond | Deanburn | Queen’s Escort 1984 |
| Oliver | Sandie | Public | Flower Girl 1981, Lady in Waiting 1982 |
| Oliver | Susan | Grange | Fairy 1986 |
| Oliver | Wendy | Public | Flower Girl 1975 |
| Oluszczak | Kacper | Grange | Presentee 2016 |
| Oluszczak | Zofia | Grange | Presentee 2016 |
| Onori | Gianni | St Mary’s | Presentee 1998, Presentee 2000, Presentee 2001 |
| Onori | Guilia | St Mary’s | Fairy 1990, Flower Girl 1992, Maid of Honour 1993 |
| Orr | Alexander | St Mary’s | Queen’s Herald 1978 |
| Orr | Andrew | Kinneil | Queen’s Herald 1975 |
| Orr | Angus | Kinneil, St Mary’s | Presentee 1971, Presentee 1975 |
| Orr | Allan | Kinneil | Presentee 1965 |
| Orr | Barbara | Deanburn | Maid of Honour 1984 |
| Orr | Bassie | Grange | Maid of Honour 1929 |
| Orr | Betty | Grange | Fairy 1946, Lady in Waiting 1951 |
| Orr | Hannah | St Mary’s | Fairy 2015 |
| Orr | Isabella | Bo’ness Infant | Fairy 1929 |
| Orr | Jason | Kinneil | Lord in Waiting 2005 |
| Orr | Kelly | Kinneil | Fairy 1991 |
| Orr | Lindsey | Kinneil | Flower Girl 1992 |
| Orr | Margaret | Deanburn | Fairy 1973 |
| Orr | Minnie | Bo’ness Infant | Fairy 1923 |
| Osbourne | Karen | Grange | Flower Girl 1978 |
| Osbourne | Sandra | Grange | Lady in Waiting 1976 |
| Osbourne | Shannon | Deanburn | Fairy 2007 |
| Ostacchini | Antonio | St Mary’s | Presentee 1999 |
| Ostacchini | Luca | St Mary’s | Presentee 2011, Presentee 2012 |
| Ostacchini | Mary | St Mary’s | Maid of Honour 1937 |
| Ostacchini | Mary | St Mary’s | Flower Girl 1963 |
| Oswald | Eric | Blackness | Presentee 1953 |
| Oswald | Irene | Blackness | Presentee 1954, Presentee 1957, Presentee1959 |
| Oswald | Ruairidh | Public | Presentee 2013 |
| Owens | Jill | Public | Flower Girl 1993, Presentee 1996 |
| Owens | Katie | Public | Fairy 1987, Presentee 1991 |
