| Havza Tunnel Havza Tüneli | |
| Location: | Havza, Samsun Province |
| Coordinates: | 40.9325°N 35.6531°W |
| Status: | Operational |
| Startwork: | 2005 |
| Operator: | General Directorate of Highways |
| Traffic: | automotive |
| Construction: | Fermanoğlu Construction Company |
| Length: | 845and |
| Lanes: | 2 x 2 |
| Speed: | 80km/h |
Havza Tunnel (tr|Havza Tüneli), is a highway tunnel constructed on the Samsun-Çorum highway in Samsun Province, northern Turkey.
It is situated near Paşapınarı village of Havza, Samsun. The 845and-long twin-tube tunnel carrying two lanes of traffic in each direction. The 19 Mayıs Tunnel follows the Havza Tunnel in direction Çorum.
The tunnel was opened to traffic on 15 February 2009 by Turkish Prime Minister Recep Tayyip Erdoğan.