| Title | Composer First Name | Composer Last Name | Copies | Season | Voicing |
|---|---|---|---|---|---|
| O Lord Support Us All the Day Long | Carl | Schalk | 19 | General | SAB |
| O Love How Deep | Everett | Titcomb | 15 | General | SATB |
| O Love How Deep How Broad How High | Richard | Peek | 25 | General | SATB |
| O Love How Deep How Broad How High | Michael | Larkin | 34 | General | SATB |
| O Love How Deep How Broad How High | Michael | Larkin | 34 | General | SATB |
| O Love of God | Eric | Thiman | 12 | SAB | |
| O Loving Saviour Slain For Us | DFE | Auber | 28 | Easter | SATB |
| O Most Merciful | Bishop R. | Heber | 34 | General | SATB |
| O Praise the Lord | Richard | Proulx | 25 | SAB | |
| O Praise the Lord | Karl | Graun | 21 | Christmas | SATB |
| O Praise the Lord of Hosts | Camille | Saint-Saens | 25 | Christmas | SAB |
| O Rejoice Ye Christians Loudly | Johann | Bach | 20 | General | SATB |
| O Sacared Feast | Healey | Willan | 20 | SATB | |
| O Sacred Head Now Wounded | J. S. | Bach | 18 | Lent | SATB |
| O Savior Hear Me | Daniel | Protheroe | 17 | SATB | |
| O Saviour of the World | John | Goss | 49 | Lent | SATB |
| O Saviour of the World | John | Goss | 19 | Lent | SAB |
| O Saviour Sweet | Clarence | Dickinson | 12 | SAB | |
| O Sing a New Song to the Lord | Michael | Bedford | 28 | General | SATB |
| O Sing unto the Lord | George F | Handel | 21 | General | SAB |
| O Taste and See | R. Vaughan | Williams | 31 | General | SATB |
| O Vos Omnes | Pablo | Casals | 49 | Lent | SATB |
| Of the Father's Love Begotten | Paul | Wohlgemuth | 26 | Christmas | SATB |
| Offertory | John Ness | Beck | 32 | SATB | |
| Oh COme Little Children | Melvin | Rotermund | 22 | Christmas | SATB |