| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Siecq | city | Poitou-Charentes | France | 45.83 | -0.19 | 275 | 2201 |
| Siegen | city | Alsace | France | 48.96 | 8.04 | 830 | 7755 |
| Sieisforns de Mar | city | Provence-Alpes-Cote d'Azur | France | 43.09 | 5.83 | 164 | 93203 |
| Sierck | city | Lorraine | France | 49.44 | 6.36 | 830 | 7649 |
| Sierck-les-Bains | city | Lorraine | France | 49.44 | 6.36 | 830 | 7649 |
| Sierentz | city | Alsace | France | 47.66 | 7.45 | 843 | 12436 |
| Sierenz | city | Alsace | France | 47.66 | 7.45 | 843 | 12436 |
| Siergue | city | Rhone-Alpes | France | 45.77 | 3.96 | 1886 | 5504 |
| Sierk | city | Lorraine | France | 49.44 | 6.36 | 830 | 7649 |
| Siersthal | city | Lorraine | France | 49.04 | 7.35 | 1085 | 8042 |
| Sierville | city | Haute-Normandie | France | 49.59 | 1.04 | 830 | 9939 |
| Siest | city | Aquitaine | France | 43.65 | -1.13 | 65 | 5701 |
| Sieurac | city | Midi-Pyrenees | France | 43.80 | 2.10 | 830 | 2708 |
| Sieurac de Perigòrd | city | Aquitaine | France | 44.82 | 0.99 | 200 | 3486 |
| Sieurac de Rabairac | city | Aquitaine | France | 45.18 | 0.35 | 830 | 2141 |
| Sieuras | city | Midi-Pyrenees | France | 43.18 | 1.34 | 1007 | 1764 |
| Sieussac | city | Midi-Pyrenees | France | 45.01 | 1.54 | 830 | 1891 |
| Sievoz | city | Rhone-Alpes | France | 44.90 | 5.84 | 2509 | 6130 |
| Sieweiler | city | Alsace | France | 48.84 | 7.20 | 1007 | 5914 |
| Siewiller | city | Alsace | France | 48.84 | 7.20 | 1007 | 5914 |