| Collinz | J. | Farmer | York | 1882 | Herald Almanack |
| Collott | K. | Gardener | Canning | 1889 | WA Almanack |
| Collyns | P. | Engine Driver N. Railway | Geraldton | 1879 | Herald Almanack |
| Collyns | P. | Engine Driver N. Railway | Geraldton | 1880 | Herald Almanack |
| Collyns | P. | Engine Driver | Victoria District (Geraldton) | 1880 | WA Almanack |
| Collyns | P. | Engine Driver N. Railway. | Geraldton | 1881 | Herald Almanack |
| Collyns | P. | Engine Driver | Victoria District (Geraldton) | 1881 | WA Almanack |
| Collyns | P. | Engine Driver N. Railway | Geraldton | 1882 | Herald Almanack |
| Collyns | P. | Engine Driver | Victoria Districts (Geraldton) | 1882 | WA Almanack |
| Collyns | P. | Engine Driver N. Railway | Geraldton | 1883 | Herald Almanack |
| Collyns | P. | Engineer | York | 1887 | WA Almanack |
| Collyns | P. | Engineer | York | 1888 | WA Almanack |
| Collyns | P. | Engineer | York | 1889 | WA Almanack |
| Collyns | P. | Engine Driver | Newcastle | 1897 | Witton's Directory |
| Colman | S. | Mining Registrar | Southern Cross | 1897 | Witton's Directory |
| Colman | T. | | Swan Street, North Fremantle | 1897 | Witton's Directory |
| Colmore | W. | Accountant | Perth | 1887 | WA Almanack |
| Colmore | W. | Accountant | Perth | 1888 | WA Almanack |
| Colmore | W. | Accountant | Perth | 1889 | WA Almanack |
| Colonial Finance Corporation | Gray, G. | Manager | Second Floor, National Mutual Buildings, Saint George's Terrace, Perth | 1897 | Witton's Directory |
| Colonial Mutual Life Assurance Soc, Ltd | Barker, E. S. | Manager | Ground Floor, Commercial Buildings, Saint George's Terrace, Perth | 1897 | Witton's Directory |
| Colreavy | B. | Boarding House Keeper | Perth | 1886 | WA Almanack |
| Colreavy | B. | Boading-House Keeper | Perth | 1887 | WA Almanack |
| Colreavy | B. | Boarding-House Keeper | Perth | 1888 | WA Almanack |
| Colreavy | B. | Miner | Perth | 1889 | WA Almanack |
| Colton | J. | | Mandurah | 1897 | Witton's Directory |
| Colton | J. & Co, Ltd. | Wholesale Saddlers & Saddlers' Ironmongers | 180 Barrack Street, Perth | 1897 | Witton's Directory |
| Colton | James | Farmer | Brunswick | 1877 | Herald Almanack |
| Colton | James | Farmer | Brunswick, Perth Road, Harvey & Collie | 1878 | Herald Almanack |
| Colton | James | Farmer | Harvey (Perth Road) | 1880 | Herald Almanack |
| Colton | James | Farmer | Harvey (Perth Road) | 1882 | Herald Almanack |
| Colton | James | Farmer (Perth Road) | Harvey | 1883 | Herald Almanack |
| Colton | James | Farmer | Harvey (Perth Road) | 1884 | Herald Almanack |
| Colton | James. | Farmer | Harvey (Perth Road) | 1879 | Herald Almanack |
| Colton | James. | Farmer | Harvey (Perth Road) | 1881 | Herald Almanack |
| Colville | J | Miner | Nannine | 1897 | Witton's Directory |
| Colvin | G. | Mill Worker | Jarrahdale Timber Co. | 1883 | Herald Almanack |
| Colvin | G. | Mill Employee | Jarrahdale Timber Co. | 1884 | Herald Almanack |
| Combley | Frederick | | Northam | 1897 | Witton's Directory |
| Comerford | N. | | Mantana Hill (suburb), Coolgardie | 1897 | Witton's Directory |
| Comish | H. | Labourer | Fremantle | 1880 | WA Almanack |
| Commercial Bank of Australia Ltd (H. E. Weston, Manager; J. N. L. Steele, Accountant) | | | Esperance Bay | 1897 | Witton's Directory |
| Commercial Bank of Australia, Ltd | Thomas, W. H. J. | Manager | Saint George's Court on Saint George's Terrace, Perth | 1897 | Witton's Directory |
| Commercial Hotel (P. Brennan, Proprietor) | | | Hannan Street, Kalgoorlie | 1897 | Witton's Directory |
| Commercial Union Insurance Co, Ltd | Johnston, Geo H. | Local Secretary & Underwriter | First Floor, Commercial Buildings, Saint George's Terrace, Perth | 1897 | Witton's Directory |
| Commerford | E. | Telegraph Operator | Geraldton | 1887 | WA Almanack |
| Commerford | M. | Postmaster and Customs Officer | Victoria Districts (Geraldton & Suburbs) | 1866 | WA Almanack |
| Commerford | M. | Postmaster and Customs Office | Victoria District (Geraldton & Suburbs) | 1867 | WA Almanack |
| Commerford | M. | Postmaster and Customs Officer | Victoria District (Geraldton & Suburbs) | 1868 | WA Almanack |
| Commerford | M. | Postmaster and Customs Officer | Victoria District (Geraldton & Suburbs) | 1869 | WA Almanack |
