| Industry | Ship transport |
|---|---|
| Founded | 1934 |
| Founder | Manuel Kulukundis, Basil Mavroleon |
| Successor | London & Overseas Freighters |
| Headquarters | London |
Counties Ship Management Co. Ltd. (CSM) was an ocean-going merchant shipping company based in the United Kingdom. During the Second World War CSM merchant ships made a substantial contribution to supplying the British war effort, at a cost of 13 ships lost and 163 officers and men killed.