| Kelly | 1922 | O'Dell, Ethel (Mrs.), shopkeeper, Newland street |
| Kelly | 1933 | Ogden, Geo. A.R.San.I. surveyor & sanitary inspector to the Witham Urban District Council, Public offices, Collingwood rd |
| Kelly | 1937 | Ogden, Geo., A.R.San.I. surveyor to the Witham Urban District Council, Public offices, Collingwood rd |
| Pigot | 1826 | Oldham, Captain |
| Kelly | 1902 | Olley, Hetty (Miss), baby linen warehouse, High street |
| Kelly | 1886 | Olley, Martha (Mrs.), fancy repository |
| Kelly | 1890 | Olley, Martha (Mrs.), fancy repository |
| Kelly | 1895 | Olley, Martha (Mrs.), fancy repository |
| Kelly | 1899 | Olley, Martha (Mrs.), fancy repository, High street |
| Kelly | 1902 | Olley, Martha (Mrs.), fancy repository, High Street |
| Kelly | 1906 | Olley, Martha (Mrs.) fancy repository, High street |
| Kelly | 1908 | Olley, Martha (Mrs.) fancy repository High street |
| Kelly | 1862 | O' Malley, Sir William, The Grove |
| Kelly | 1866 | O'Malley, Sir William, The Grove |
| Kelly | 1870 | O'Malley, Sir William, The Grove |
| Kelly | 1878 | O'Malley, Sir William bart. The Grove |
| Kelly | 1882 | O'Malley, Sir William bart. J.P. The Grove |
| Kelly | 1937 | O'Reilly, Rev. Myles (Roman Catholic), Newland street |
| Kelly | 1910 | Orford, Chas. W. Bell P.H. Maldon rd |
| Kelly | 1886 | Orrell, Mrs, 4 Guithavon street |
| Kelly | 1902 | Ortlewell & Sons Limited, ironmongers, High street; & at Maldon |
| Kelly | 1910 | Orttewell & Son Ltd, ironmongers, High street; & at Maldon |
| Kelly | 1912 | Orttewell & Son Ltd. ironmongers, High st |
| Kelly | 1914 | Orttewell & Son Ltd, ironmongers, High street |
| Kelly | 1917 | Orttewell & Son Ltd. ironmonger High street |
| Kelly | 1906 | Orttewell & Sons Limited, ironmongers, High street; & at Maldon |
| Kelly | 1908 | Orttewell & Sons Ltd, ironmongers, High street; & at Maldon |
| Pigot | 1823 | Osborne, Charles, tailor |
| Kelly | 1933 | Osborne, Clifford Chas. George P.H. High st. T N 67 |
| Kelly | 1937 | George P.H. (Clifford Chas. Osborne), High st. TN 67 |
| Pigot | 1839 | Osborne, Mr. John, Witham |
| White | 1848 | Osborne, Mrs., Maldon Road |
| Kelly | 1866 | Oswald, Rev. Henry Murray, M.A. [curate] |
| Kelly | 1899 | Ottley, Geo. livery stables, Chipping hl |
| Kelly | 1902 | Ottley, Geo. livery stables, White Hart yard |
| Kelly | 1906 | Ottley, George, livery stables, Chipping Hill |
| Kelly | 1908 | Ottley, George livery stables, Chipping Hill |
| Kelly | 1910 | Ottley, George, livery stables, Chipping Hill |
| Kelly | 1912 | Ottley, George livery stables Chipping Hill |
| Kelly | 1914 | Ottley, George, livery stables, Chipping Hill |
| Kelly | 1917 | Ottley, George, livery stables, Chipping Hill |
| Kelly | 1922 | Ottley, George, livery stables, Chipping Hill |
| Kelly | 1926 | Ottley, George, livery stables, Chipping Hill. T N 68 |
| Post Office | 1855 | Overall, John, King's Head, Chipping hl |