|
# | Tower | Bell | Weight | Note | Diameter | Cast | Founder |
| 29901 | Orby, Lincolnshire, All Saints | 2 of 3 | | B | 33.00″ | 1663 | Thomas Norris |
| 29902 | Orby, Lincolnshire, All Saints | 3 of 3 | 8–0–20 | A | 36.88″ | c1499† | ROS |
| 29903 | Orchard Portman, Somerset, S Michael | 1 of 4 | 3½ cwt | E | 24.38″ | 1657† | William III & Richard II Purdue |
| 29904 | Orchard Portman, Somerset, S Michael | 2 of 4 | 3½ cwt | D♯ | 25.25″ | 1746 | William Knight |
| 29905 | Orchard Portman, Somerset, S Michael | 3 of 4 | 4 cwt | C♯ | 28.00″ | 1657† | William III & Richard II Purdue |
| 29906 | Orchard Portman, Somerset, S Michael | 4 of 4 | 5 cwt | B | 30.00″ | 1892 | Llewellins & James |
| 29907 | Orcheston, Wiltshire, S George | 1 of 4 | | D | 26.00″ | 1896 | John Warner & Sons |
| 29908 | Orcheston, Wiltshire, S George | 2 of 4 | | C♯ | 27.13″ | 1615 | John Wallis |
| 29909 | Orcheston, Wiltshire, S George | 3 of 4 | | B | 30.25″ | c1400† | Salisbury foundry |
| 29910 | Orcheston, Wiltshire, S George | 4 of 4 | 7 cwt | A | 33.00″ | 1896 | John Warner & Sons |
| 29911 | Orcheston, Wiltshire, S Mary | 1 of 3 | 3–3–6 | D | 27.50″ | 1916 | John Taylor & Co |
| 29912 | Orcheston, Wiltshire, S Mary | 2 of 3 | 5–0–2 | C | 30.63″ | 1916 | John Taylor & Co |
| 29913 | Orcheston, Wiltshire, S Mary | 3 of 3 | 7–1–25 | B♭ | 34.50″ | 1916 | John Taylor & Co |
| 29914 | Orcop, Herefordshire, S John Bapt | 1 of 5 | 4½ cwt | E | 27.00″ | 1907 | James Barwell & Co |
| 29915 | Orcop, Herefordshire, S John Bapt | 2 of 5 | 4 cwt | D | 26.75″ | 1663† | John I Pennington ('IP') |
| 29916 | Orcop, Herefordshire, S John Bapt | 3 of 5 | 5¾ cwt | C♯ | 30.50″ | 1731 | Abraham II Rudhall |
| 29917 | Orcop, Herefordshire, S John Bapt | 4 of 5 | 5¼ cwt | B | 31.50″ | 1663† | John I Pennington ('IP') |
| 29918 | Orcop, Herefordshire, S John Bapt | 5 of 5 | 7½ cwt | A♯ | 34.25″ | 1679† | ? John II Pennington ('IP') |
| 29919 | Ordsall, Greater Manchester, S Ignatius Centre (formerly S Ignatius) | 1 of 1 | 9–0–6 | A | 36.63″ | 1903 | John Taylor & Co |
| 29920 | Ordsall, Nottinghamshire, All Hallows | 1 of 6 | 3–1–12 | F♯ | 24.50″ | 1892 | John Taylor & Co |
| 29921 | Ordsall, Nottinghamshire, All Hallows | 2 of 6 | 4–1–6 | E | 26.50″ | 1892 | John Taylor & Co |
| 29922 | Ordsall, Nottinghamshire, All Hallows | 3 of 6 | 5–0–0 | D | 28.50″ | 1892 | John Taylor & Co |
| 29923 | Ordsall, Nottinghamshire, All Hallows | 4 of 6 | 5–1–9 | C♯ | 29.50″ | 1892 | John Taylor & Co |
| 29924 | Ordsall, Nottinghamshire, All Hallows | 5 of 6 | 5–2–10 | B | 31.63″ | 1743 | Daniel Hedderly |
| 29925 | Ordsall, Nottinghamshire, All Hallows | 6 of 6 | 6–2–22 | A | 34.50″ | 1661 | George I Oldfield |
| 29926 | Orford, Suffolk, S Bartholomew | 1 of 8 | 3–1–26 | G | 24.60″ | 1998 | Eijsbouts |
| 29927 | Orford, Suffolk, S Bartholomew | 2 of 8 | 3–2–22 | F♯ | 25.20″ | 1998 | Eijsbouts |
| 29928 | Orford, Suffolk, S Bartholomew | 3 of 8 | 4–0–3 | E | 26.60″ | 1998 | Eijsbouts |
| 29929 | Orford, Suffolk, S Bartholomew | 4 of 8 | 4–1–24 | D | 28.00″ | 1998 | Eijsbouts |
| 29930 | Orford, Suffolk, S Bartholomew | 5 of 8 | 6–1–10 | C | 31.50″ | 1639 | Miles II Graye |
| 29931 | Orford, Suffolk, S Bartholomew | 6 of 8 | 6–3–13 | B | 32.50″ | 1694 | Henry Pleasant |
| 29932 | Orford, Suffolk, S Bartholomew | 7 of 8 | 7–2–8 | A | 35.25″ | 1679 | John Darbie |
| 29933 | Orford, Suffolk, S Bartholomew | 8 of 8 | 10–2–27 | G | 39.50″ | 1679 | John Darbie |
| 29934 | Orleans, Massachusetts, United States of America, The Transfiguration | 1 of 10 | 5–0–25 | G | 27.00″ | 2008 | Whitechapel Bell Foundry |
| 29935 | Orleans, Massachusetts, United States of America, The Transfiguration | 2 of 10 | 5–1–1 | F | 28.00″ | 2008 | Whitechapel Bell Foundry |
| 29936 | Orleans, Massachusetts, United States of America, The Transfiguration | 3 of 10 | 5–2–11 | E♭ | 29.50″ | 2008 | Whitechapel Bell Foundry |
| 29937 | Orleans, Massachusetts, United States of America, The Transfiguration | 4 of 10 | 6–0–8 | D | 30.25″ | 2008 | Whitechapel Bell Foundry |
| 29938 | Orleans, Massachusetts, United States of America, The Transfiguration | 5 of 10 | 6–1–16 | C | 31.75″ | 2008 | Whitechapel Bell Foundry |
| 29939 | Orleans, Massachusetts, United States of America, The Transfiguration | 6 of 10 | 7–1–16 | B♭ | 34.00″ | 2008 | Whitechapel Bell Foundry |
| 29940 | Orleans, Massachusetts, United States of America, The Transfiguration | 7 of 10 | 9–1–24 | A♭ | 37.00″ | 2008 | Whitechapel Bell Foundry |
| 29941 | Orleans, Massachusetts, United States of America, The Transfiguration | 8 of 10 | 10–3–3 | G | 39.00″ | 2008 | Whitechapel Bell Foundry |
| 29942 | Orleans, Massachusetts, United States of America, The Transfiguration | 9 of 10 | 15–1–8 | F | 43.75″ | 2008 | Whitechapel Bell Foundry |
| 29943 | Orleans, Massachusetts, United States of America, The Transfiguration | 10 of 10 | 21–2–23 | E♭ | 49.00″ | 2008 | Whitechapel Bell Foundry |
| 29944 | Orlestone, Kent, S Mary | 1 of 3 | 2¾ cwt | E | 25.00″ | 1631 | John Wilnar |
| 29945 | Orlestone, Kent, S Mary | 2 of 3 | 3¾ cwt | D | 27.14″ | 1635 | John Wilnar |
| 29946 | Orlestone, Kent, S Mary | 3 of 3 | 5 cwt | C | 29.60″ | 1591† | John Cole |
| 29947 | Orleton, Herefordshire, S George | 1 of 3 | | | 29.38″ | 1639 | John II Green |
| 29948 | Orleton, Herefordshire, S George | 2 of 3 | | | 32.00″ | 1668 | John II Martin |
| 29949 | Orleton, Herefordshire, S George | 3 of 3 | 8½ cwt | | 36.63″ | 1665 | John II Martin |
| 29950 | Orlingbury, Northamptonshire, S Mary | 1 of 6 | 5–2–8 | D | 29.50″ | 1993 | John Taylor Bellfounders Ltd |