| Kay | Culf & Kay (Sheffield) Ltd |
| Kay | Edward Kay |
| Kay | Edward Kay |
| Kay | John Kay & Company / John Robert Kay |
| Kay | Kay's Ltd |
| Kay | Stanley, Lister & Kay |
| Kay | Sydney Kay |
| Kay | Wall, Kay & Sons Ltd |
| Kaye | T. S. Kaye & Sons |
| Kebberling | Samuel Ebenezer Kebberling |
| Keeler | Edward Keeler & Co |
| Keeler | Keeler & Saville |
| Keene | The Keene Cutlery Co |
| Keeton | Keeton & Co |
| Kent | Kent Brothers Ltd |
| Kent | Richard Kent & Son |
| Kent | William Kent / Abel Kent |
| Kenwood | Kenwood Silver Company Ltd |
| Kesteven | A. Kesteven |
| Kestrel | Kestrel |
| Kibble | Eadon, Kibble, & Wever [Weaver] |
| Kilburn | W. Kilburn Ltd |
| Kilner | Kilner Brothers |
| Kilner | S. N. Kilner & Sons Ltd |
| King | James King & Company |
| Kingsley | Kingsley Cutlery Co |
| Kippax | Nowill & Kippax |
| Kirk | Arthur Kirk & Son |
| Kirk | F. A. Kirk (Cutlers) Ltd |
| Kirk | John E. & P. Kirk |
| Kirk | John Kirk |
| Kirk | Kirk & Matz Ltd |
| Kirkanson | Kirkanson of Sheffield Ltd |
| Kirkby | J. Kirkby |
| Kirkby | Joseph Kirkby & Sons |
| Kirkby | Josiah Kirkby |
| Kirkby | Kirkby, Gregory & Company |
| Kirkby | Mary Kirkby |
| Kirkby | Samuel & James Kirkby |
| Kirkham | Joshua Kirkham |
| Kirkham | Kirkham & Company |
| Kitchen | Kitchen Devils Ltd |
| Kitchin | S. & J. Kitchin Ltd |
| Kittel | Kittel Brothers |
| Knight | Knight Brothers |
| Knowles | John Knowles & Son |
| Knowles | Lister & Knowles |
| Knowles | Smiths, Knowles, Creswick & Company |
| Krausz | A. Krausz |
| Kropp | Kropp Manufacturing Company Ltd |
| Kutrite | Kutrite of Sheffield Ltd |
