| 15,2 cm kanon m/42 | |
| Type: | Naval gun |
| Service: | 1947–2017 |
| Designer: | Bofors |
| Number: | 30 |
| Action: | 10/min |
| Origin: | Sweden |
| Is Explosive: | yes |
| Is Artillery: | yes |
| Used By: | |
| Design Date: | 1942 |
| Manufacturer: | Bofors |
| Part Length: | 8.05m (26.41feet) |
| Cartridge: | 45kg (99lb) |
| Caliber: | 152mm |
| Rate: | 12-15 shots /min |
| Max Range: | 28400yd[1] |
| Elevation: | -10 to +60° |
The Bofors 152 mm kanon m/42 is a naval gun for use on ships. It was initially used aboard light cruisers and cruisers including the Swedish and the Dutch, after World War II. The last active ship to use the gun was the Peruvian Navy cruiser and was the largest naval gun still in active service prior to the commissioning of in October 2016, which is armed with the 155 mm Advanced Gun System.
The 152 mm gun was first designed in 1939 by Bofors for the Koninklijke Marine cruiser Kijkduin, eventually named . After the German invasion of the Netherlands in 1940 these artillery pieces were confiscated by the Swedish Government and placed on the Swedish cruiser .