| 1921 | Keats Realty 52836649A | Active |
| 1922 | Koan Pictures Llp T15LL1653G | Active |
| 1923 | Kaiyo Singapore 52853974D | Active |
| 1924 | Klg Express Services 52916595C | Active |
| 1925 | Keris Plasterceil Decor 52844883L | Active |
| 1926 | Kreature Care 52988478W | Active |
| 1927 | Kolam Ayer St. George's East Residents' Committee S86SS0029K | Active |
| 1928 | Kshitigarbha Buddhist Society T01SS0036D | Active |
| 1929 | Kln Shipping 52846775A | Active |
| 1930 | Kian Chye Transport 52848071E | Active |
| 1931 | Kg Chai Chee Rainbow Ville Residents' Committee S84SS0003C | Active |
| 1932 | K T Interior 34200400W | Active |
| 1933 | K.m. Chan Computer Services 52852712J | Active |
| 1934 | Karho Trading 52846344J | Active |
| 1935 | Kiew Lee Tong Temple S87SS0067K | Active |
| 1936 | Keyuan Education Academy Pte. Ltd. 201536221Z | Active |
| 1937 | Kontrac Engineering Pte. Ltd. 201601150Z | Active |
| 1938 | Kelden Design & Consultancy 52843837M | Active |
| 1939 | Katong Delights (traditional Snacks And Local Favourites) 52898625B | Active |
| 1940 | Kbs Engineering Services 52842693A | Active |
| 1941 | King's College London Alumni Society (singapore) T06SS0307E | Active |
| 1942 | Kenny Grocery 52839851B | Active |
| 1943 | Kee Fong B365 Vision International 52854185D | Active |
| 1944 | Kawa Auto Private Ltd 198000922R | Active |
| 1945 | Kian Choon Medical Trading 34043500C | Active |
| 1946 | Kent Seng Vehicle Repairer 52837141W | Active |
| 1947 | Kwanling Tan T06SS0181K | Active |
| 1948 | Kum In Meditation Association S91SS0049J | Active |
| 1949 | Kwan Hua Art Gallery 52805251M | Active |
| 1950 | Ktech Service 52699700A | Active |