| Altenhof Oldenhave (Low G.), Celmerstorp (Dan.) | |
| Image Coa: | Altenhof Wappen.png |
| Coordinates: | 54.4167°N 61°W |
| Image Plan: | Altenhof in RD.png |
| State: | Schleswig-Holstein |
| District: | Rendsburg-Eckernförde |
| Amt: | Schlei-Ostsee |
| Elevation: | 5 |
| Area: | 12.13 |
| Postal Code: | 24340 |
| Area Code: | 04351 |
| Licence: | RD |
| Gemeindeschlüssel: | 01 0 58 004 |
| Mayor: | Hilmar Marohn |
Altenhof (Low German; Low Saxon; German, Low; Saxon, Low: Oldenhave, Danish: Celmerstorp) is a municipality in the district of Rendsburg-Eckernförde, in Schleswig-Holstein, Germany.