| 1921 | Ansell International Company
20913100D | Active |
| 1922 | Ango Plumbing & Engineering Enterprises
| Active |
| 1923 | Allpets & Aqualife Vets Pte. Ltd.
200202976D | Active |
| 1924 | Aquametro (South East Asia) Pte Ltd
| Active |
| 1925 | Aqua-terra Supply Co Ltd
| Active |
| 1926 | Ann Huat & Co
03832800C | Active |
| 1927 | Animal Recovery Centre Pte Ltd The
| Active |
| 1928 | Ang Tong Seng Bros Enterprises Pte Ltd
| Active |
| 1929 | Ann Tan & Associates
53131114K | Active |
| 1930 | Alltek Technology (S'pore) Pte Ltd
| Active |
| 1931 | All Big Trading Company
24773900J | Active |
| 1932 | Al'fresco Elite System Pte Ltd
199301190Z | Active |
| 1933 | All Watches Pte Ltd
198402065R | Active |
| 1934 | Agro Flora & Landscape Pte. Ltd.
198602224K | Active |
| 1935 | Afpd Pte., Ltd.
200101686M | Active |
| 1936 | Allied Metalcraft Co Pte Ltd
| Active |
| 1937 | Alcap Stationery Pte. Ltd.
200312446N | Active |
| 1938 | All Breeds Pets
26811600L | Active |
| 1939 | Ahe Pte. Ltd.
200206207H | Active |
| 1940 | Ah Seng Stainless Steel Pte. Ltd.
200301818C | Active |
| 1941 | Ah Heng Furniture Co
08093200B | Active |
| 1942 | Agilent Technologies Singapore (sales) Pte. Ltd.
199904761K | Active |
| 1943 | Age D'or Pte Ltd
198305357N | Active |
| 1944 | Ag Industries Asia-pacific Pte Ltd
| Active |
| 1945 | Acuaire S'pore Pte Ltd
| Active |
| 1946 | Activia Engineering Pte. Ltd.
200416639M | Active |
| 1947 | Acro Pte Ltd
| Active |
| 1948 | Active Learners
52816402C | Active |
| 1949 | Act 3 Theatrics Pte. Ltd.
198401061R | Active |
| 1950 | A&k Industrial Supply
49591700A | Active |