| Image Coa: | DEU Schmalfeld COA.svg |
| Coordinates: | 53.8775°N 9.9853°W |
| Image Plan: | Schmalfeld in SE.svg |
| State: | Schleswig-Holstein |
| District: | Segeberg |
| Amt: | Auenland Südholstein |
| Elevation: | 24 |
| Area: | 19.33 |
| Postal Code: | 24640 |
| Area Code: | 04191, 04195 |
| Licence: | SE |
| Gemeindeschlüssel: | 01 0 60 073 |
| Website: | www.kaltenkirchen-land.de |
| Mayor: | Klaus Gerdes |
Schmalfeld is a municipality in the district of Segeberg, in Schleswig-Holstein, Germany.