John Aird & Co.
| Company type | Private |
|---|---|
| Industry | Construction |
| Founded | 1848 |
| Defunct | 1990s |
| Fate | Withdrew from Civil engineering |
| Headquarters | London, UK |
Key people | Sir John Aird, Jnr, (Chairman) |
John Aird & Co. was once a leading British civil engineering business based in London.