Class 40 may refer to:
- British Rail Class 40
- Electroputere LE5100, otherwise known as CFR Class 40/41/42
- New South Wales 40 class locomotive
- Class40, a class of monohull sailboat and a yacht primarily used for short handed offshore and coastal racing
This disambiguation page lists articles associated with the title Class 40.If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: