| First Line | Tune | Verses | Source | Tick to select |
| O bread to pilgrims given | Passion Chorale | 3 | HP620 | |
| O Breath of God, breathe on us now | Calm | 5 | HP308a | |
| O Breath of God, breathe on us now | Abends | 5 | HP308b | |
| O Breath of life, come sweeping through us | Spiritus Vitae | 3 | HP777a | |
| O Breath of life, come sweeping through us | Islington | 3 | HP777b | |
| O Breath of life, come sweeping through us | Spiritus Vitae | 4 | PP122 | |
| O Christ the Lord, O Christ the King | Talbot House (Toc H) | 4 | HP406 | |
| O Christ, the Healer, we have come | Invitation | 5 | HP395 | |
| O come and dwell in me | Hampton (Huddersfield) | 5 | HP293 | |
| O come, all ye faithful | Adeste Fidelis | 6 | HP110a | |
| O come, all ye faithful | Adeste Fidelis | 5 | HP110b | |
| O come, and let us to the Lord in songs our voices | Irish | 6 | HP567 | |
| O come, O come, Immanuel | Veni Immanuel | 5 | HP085 | |
| O crucified Redeemer, whose life-blood we have spilt | Llangloffan | 3 | HP424 | |
| O dearest Lord, thy sacred head | Nun Danket All (Gr?fenberg) | 4 | HP172a | |
| O dearest Lord, thy sacred head | Ayrshire | 4 | HP172b | |
| O Father, whose creating hand brings harvest | Ryburn | 3 | HP349 | |
| O for a closer walk with God | Belmont | 6 | MH461 | |
| O for a heart to praise my God | Abridge (St Stephen) | 5 | HP536a | |
| O for a heart to praise my God | Stockton | 5 | HP536b | |
| O for a thousand tongues to sing | Lydia | 8 | HP744a | |
| O for a thousand tongues to sing | Richmond | 8 | HP744b | |
| O for a thousand tongues to sing | University | 8 | HP744c | |
| O for a thousand tongues to sing | Lyngham | 8 | HP744d | |
| O God in heaven, whose loving plan | Wych Cross | 3 | HP369 | |
| O God of all grace, thy goodness we praise | Harwich | 4 | MH066 | |
| O God of Bethel, by whose hand | Salzburg | 5 | HP442a | |
| O God of Bethel, by whose hand | St Paul (Aberdeen) | 5 | HP442b | |
| O God of earth and altar | King's Lynn | 3 | HP426a | |
| O God of earth and altar | Passion Chorale | 3 | HP426b | |
| O God of our forefathers, hear | David's Harp | 4 | HP554a | |
| O God of our forefathers, hear | Wrestling Jacob | 4 | HP554b | |
| O God our Father, who dost make us one | Morecambe | 4 | HP778 | |
| O God, by whose almighty plan | St Matthias | 3 | HP396 | |
| O God, O Spirit known to us | Taunton School | 3 | HP309 | |
| O God, our help in ages past | St Anne | 7 | HP358 | |
| O God, thou art the Father of all that hath believed | Llangloffan | 3 | HP052a | |
| O God, thou art the Father of all that hath believed | Durrow | 3 | HP052b | |
| O God, thou art the Father of all that hath believed | Cruger | 3 | HP052c | |
| O God, thy being who can sound? | Von Himmel Hoch | 6 | HP054 | |
| O God, what offering shall I give to thee | Pater Omnium | 5 | HP801 | |
| O grant us light, that we may know | Alstone | 5 | MH630 | |
| O happy band of pilgrims | Knecht | 7 | MH618 | |
| O happy day that fixed my choice (no chorus) | Festus | 5 | HP702 | |
| O happy day that fixed my choice (with chorus) | O Happy Day | 4 | MX024 | |
| O heavenly King, look down from above | Houghton | 5 | HP504 | |
| O Holy Spirit, Lord of grace | Tallis' Ordinal | 3 | HP310 | |
| O how blest the hour, Lord Jesus | Halton Holgate | 6 | HP655a | |
| O how blest the hour, Lord Jesus | St Oswald | 6 | HP655b | |
| O Jesus Christ, grow thou in me | Westminster New | 6 | HP742 | |
| O Jesus, I have promised | Wolvercote | 4 | HP704a | |
| O Jesus, I have promised | Day of Rest | 4 | HP704b | |
| O Jesus, I have promised | Hatherop Castle | 4 | HP704c | |
| O Jesus, King most wonderful | Bishopthorpe | 7 | HP269a | |
| O Jesus, King most wonderful | Metzler's Redhead | 7 | HP269b | |
| O Jesus, King most wonderful | Land of Rest | 7 | HP269c | |
| O King enthroned on high, thou comforter divine | Temple | 3 | HP311a | |
| O King enthroned on high, thou comforter divine | Amen Court | 3 | HP311b | |
| O lift us up, strong Son of God | Oxford New | 5 | HP427a | |
| O lift us up, strong Son of God | West Burn | 5 | HP427b | |
| O little one sweet, O little one mild | O Jesulein Suss | 3 | HP111 | |
| O little town of Bethlehem | Forest Green | 4 | HP113a | |
| O little town of Bethlehem | Bethlehem | 4 | HP113b | |
| O little town of Bethlehem | Christmas Carol | 4 | HP113c | |
| O little town of Bethlehem | Kingsfold | 4 | HP113d | |
| O Lord and Master of us all | St Swithun | 8 | HP717a | |
| O Lord and Master of us all | St Hugh | 8 | HP717b | |
| O Lord my God! When I in awesome wonder | How Great Thou Art | 4 | PP125 | |
| O Lord of every lovely thing | Nicolaus (Lobt Gott) | 5 | MH587 | |
| O Lord of heaven and earth and sea | Almsgiving | 6 | HP337a | |
| O Lord of heaven and earth and sea | Portland | 6 | HP337b | |
| O Lord of life, thy quickening voice | Dorking | 4 | HP637 | |
| O Lord, all the world belongs to you | O Lord, all the world . . . | 5 | MX042 | |
| O Lord, enlarge our scanty thought | Eden | 5 | HP568 | |
| O Lord, your tenderness, melting all my bitterness | O Lord, your Tenderness | 1 | PP130 | |
| O love divine, what hast thou done! | St Chrysostom | 3 | HP175a | |
| O love divine, what hast thou done! | Leicester (Bedford) | 3 | HP175b | |
| O love of God, how strong and true | Martham | 6 | HP042a | |
| O love of God, how strong and true | Eisenach | 6 | HP042b | |
| O love that wilt not let me go | St Margaret | 4 | HP685 | |
| O love, how deep, how broad, how high! | Pro Nobis | 6 | HP229 | |
| O loving Lord, who art for ever seeking | O Perfect Love | 4 | HP798a | |
| O loving Lord, who art for ever seeking | Zu Meinem Herrn | 4 | HP798b | |
| O Master, let me walk with thee | Stanley | 2 | HP802a | |
| O Master, let me walk with thee | London (Kettering) | 2 | HP802b | |
| O my Saviour, hear me, draw me close to Thee | O my Saviour, hear me | 4 | MH453 | |
| O perfect love, all human thought transcending | O Perfect Love | 3 | HP370 | |
| O praise God in his holiness | O Praise God | 6+ | HP502 | |
| O praise him! O praise him! | Song of Caedmon | 3 | HP503 | |
| O sacred head, once wounded | Passion Chorale | 4 | HP176 | |
| O safe to the Rock that is higher than I | Shelter | 3 | MH499 | |
| O Saviour, bless us ere we go | St Matthias | 5 | MH692 | |
| O Saviour, I have nought to plead | Saffron Walden | 2 | MH439 | |
| O send thy light forth and thy truth | Nun Danket All (Gr?fenberg) | 4 | HP537 | |
| O sons and daughters let us sing | O Filii et Filiae | 6 | HP205 | |
| O Spirit of the living God | Mainzer | 6 | HP322a | |
| O Spirit of the living God | St Bartholemew | 6 | HP322b | |
| O splendour of God's glory bright | Winchester New | 5 | HP461 | |
| O that mine eyes might clos?d be | Charminster | 6 (3x2) | HP555 | |
| O the bitter shame and sorrow | All of Thee | 4 | HP538a | |
| O the bitter shame and sorrow | Bourne | 4 | HP538b | |
| O thou not made with hands | Golden Treasury | 5 | HP656 | |
| O thou who at thy eucharist didst pray | Song 1 | 4 | HP779 | |
| O thou who camest from above | Hereford | 4 | HP745a | |
| O thou who camest from above | Wilton | 4 | HP745b | |
| O thou who this mysterious bread | St Botolph | 4 | HP621a | |
| O thou who this mysterious bread | Land of Rest | 4 | HP621b | |
| O thou, whom once they flocked to hear | St Sepulchre | 5 | HP150 | |
| O valiant hearts, who to your glory came | O Valiant Hearts | 4 | MX045 | |
| O what a gift! What a wonderful gift! | Canticle of the Gift | 5 | HP270 | |
| O what shall I do my Saviour to praise | Hanover | 4 | HP569 | |
| O Word of God incarnate | Bentley | 4 | HP478a | |
| O Word of God incarnate | Nyland | 4 | HP478b | |
| O Word of God incarnate | Aurelia | 4 | HP478c | |
| O worship the King, all glorious above | Hanover | 6 | HP028 | |
| O worship the Lord in the beauty of holiness | Was Lebet | 5 | HP505a | |
| O worship the Lord in the beauty of holiness | Woodhouse Grove | 5 | HP505b | |
| O worship the Lord in the beauty of holiness | Sanctissimus | 5 | HP505c | |
| Of all the Spirit's gift to me | Ripponden | 5 | HP320 | |
| Of the Father's love begotten | Divinum Mysterium | 4 | HP079 | |
| Oft in danger, oft in woe | University College | 5 | HP715 | |
| Omnipotent Redeemer, our ransomed souls adore | Hosanna in Excelsis | 3 | HP440a | |
| Omnipotent Redeemer, our ransomed souls adore | Worship (Haydn) | 3 | HP440b | |
| Omnipotent Redeemer, our ransomed souls adore | Deliverance | 3 | HP440c | |
| On a hill far away stood an old rugged cross | The Old Rugged Cross | 4 | MX026 | |
| On all the earth thy Spirit shower | Simeon | 4 | HP321 | |
| On Christmas night all Christians sing | Sussex Carol | 4 | HP115 | |
| On Jordan's bank the Baptist's cry | Winchester New | 5 | HP084 | |
| On the eve of Christmas | Bemba Tune | 5 | HP116 | |
| Once in royal David's city | Irby | 6 | HP114 | |
| Once on a mountain top there stood three | Transfiguration | 3 | HP157 | |
| One more step along the world I go | Southcote | 5 | HP746 | |
| One there is above all others | All Saints | 4 | HP149a | |
| One there is above all others | St Leonard | 4 | HP149b | |
| One who is all unfit to count as scholar | Fingal | 7 | HP539a | |
| One who is all unfit to count as scholar | Ayrshire | 7 | HP539b | |
| Onward, Christian soldiers, marching as to war | St Gertrude | 4 | HP718 | |
| Open our eyes, Lord, we want to see Jesus | Open our eyes, Lord | 1 | PP131 | |
| Open, Lord, my inward ear | Leamington | 5 | HP540 | |
| Our blest Redeemer, ere he breathed | St Cuthbert | 6 | HP312 | |
| Our Father, by whose name all parenthood is known | Rhosymedre | 3 | HP371 | |
| Our Father, who art in heaven (Lord's Prayer) | Caribbean Lord's Prayer | 6 | MX004 | |
| Our Father, who art in heaven (Lord's Prayer) | Setting in F major | | MX098 | |
| Our Father, who art in heaven (Lord's Prayer) | Setting in Dflat major | | MX099 | |
| Our Father, whose creative love the gift of life bestows | Contemplation | 5 | HP372 | |
| Our Lord is risen from the dead! | Hermann | 6 | HP206 | |
| Our Lord, his passion ended | Naphill | 3 | HP323 | |
| Out of the depths I cry to thee, Lord God! | St Martin | 5 | HP429 | |