| 1921 | Kam Tai Trading Co 32482600A | Active |
| 1922 | Kingenta Ecological Engineering Group Co., Ltd. T15UF4329H | Active |
| 1923 | Kaj Enterprise 53049735B | Active |
| 1924 | Kam Ling Store 06682300E | Active |
| 1925 | Ka Hup Motor Services 52881436B | Active |
| 1926 | K.k. Ong Heart And Lung Clinic 53052253E | Active |
| 1927 | Kingsbridge Capital Partners Ltd. T15UF1249K | Active |
| 1928 | Kiat Seng Minimart & Eating House 53125125W | Active |
| 1929 | Kastra Car Cleaning & Detailing Services 53156306E | Active |
| 1930 | K Vin Business Consultancy 52874274D | Active |
| 1931 | Kim Saik Co 27682800C | Active |
| 1932 | Kiness Cleaning Services 52826199A | Active |
| 1933 | Kintaro Engineering Works 52819363E | Active |
| 1934 | Kee Brother Motor 52821264L | Active |
| 1935 | Kingswilly Properties 52828766D | Active |
| 1936 | Kingsley Distribution 52823183M | Active |
| 1937 | Kingstar Design & Print 52820909D | Active |
| 1938 | Kingsway Asia 52819620X | Active |
| 1939 | Karisma Inter Trade & Services 52833913C | Active |
| 1940 | Kian Sin Refrigeration & Airconditioning Service 22732900K | Active |
| 1941 | Kjl Management 52821182W | Active |
| 1942 | Kartikeya International Pte. Ltd. 201427194C | Active |
| 1943 | Knotty Shop (1995) 52812643A | Active |
| 1944 | Kps Engineering Pte. Ltd. 200807941N | Active |
| 1945 | Khai Rick Enterprise 53256275E | Active |
| 1946 | Khoon Kang Lian Ngee Sia (singapore) S95SS0154A | Active |
| 1947 | Kbc Advanced Technologies Limited S90UF0022F | Active |
| 1948 | Kes Tech 52868096W | Active |
| 1949 | Kheng Chiu Loke Tin Kee Home S92SS0060E | Active |
| 1950 | Kiat Leng San Temple S94SS0054E | Active |