| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Unter Sack | city | Nidwalden | Switzerland | 46.90 | 8.41 | 4189 | 6024 |
| Unter Saller | city | Steiermark | Austria | 47.57 | 14.25 | 2057 | 7584 |
| Unter Sankt Georgen | city | Oberosterreich | Austria | 48.33 | 14.88 | 2509 | 940 |
| Unter Sankt Paul | city | Karnten | Austria | 46.82 | 14.55 | 2509 | 2682 |
| Unter Sassi | city | Nidwalden | Switzerland | 46.97 | 8.45 | 1883 | 11140 |
| Unter Saurain | city | Bayern | Germany | 48.00 | 12.11 | 1669 | 4602 |
| Unter Scheffau | city | Salzburg | Austria | 47.23 | 12.25 | 3467 | 1788 |
| Unter Scheven | city | Nordrhein-Westfalen | Germany | 51.38 | 6.98 | 213 | 190256 |
| Unter Schlagl | city | Jihocesky Kraj | Czech Republic | 48.60 | 14.37 | 1919 | 2252 |
| Unter Schlicht | city | Bayern | Germany | 47.69 | 10.78 | 2509 | 2451 |
| Unter Schmitten | city | Hessen | Germany | 50.44 | 9.02 | 830 | 23847 |
| Unter Schneedorf | city | Jihocesky Kraj | Czech Republic | 48.91 | 13.96 | 2739 | 2443 |
| Unter Schoenmattenwag | city | Hessen | Germany | 49.53 | 8.86 | 1669 | 4420 |
| Unter Schonmattenwag | city | Hessen | Germany | 49.53 | 8.86 | 1669 | 4420 |
| Unter Schossenreuth | city | Karlovarsky Kraj | Czech Republic | 50.17 | 12.50 | 1669 | 5278 |
| Unter Schotterlee | city | Niederosterreich | Austria | 48.65 | 16.32 | 830 | 2834 |
| Unter Schwarz | city | Hessen | Germany | 50.74 | 9.59 | 875 | 4240 |
| Unter Schwenden | city | Bayern | Germany | 47.57 | 9.83 | 2834 | 15990 |
| Unter Schwendimatt | city | Bern | Switzerland | 46.88 | 7.70 | 3349 | 8088 |
| Unter Schön | city | Karlovarsky Kraj | Czech Republic | 50.08 | 12.41 | 1669 | 20216 |
| Unter Schönhub | city | Jihocesky Kraj | Czech Republic | 48.64 | 14.30 | 2509 | 1937 |
| Unter Seibertenrod | city | Hessen | Germany | 50.61 | 9.15 | 1669 | 4704 |
| Unter Simorsch | city | Stredocesky Kraj | Czech Republic | 50.43 | 14.50 | 830 | 6886 |
| Unter Sorg | city | Hessen | Germany | 50.69 | 9.30 | 1082 | 14352 |
| Unter Spis | city | Nidwalden | Switzerland | 46.95 | 8.44 | 3674 | 11206 |
| Unter Staffel | city | Schwyz | Switzerland | 46.93 | 8.83 | 4189 | 1630 |
| Unter Staldifeld | city | Nidwalden | Switzerland | 46.95 | 8.39 | 2509 | 24791 |
| Unter Steigenbach | city | Baden-Wurttemberg | Germany | 48.25 | 8.35 | 1988 | 20176 |
| Unter Steindorfl | city | Czech Republic | 48.63 | 14.45 | 2509 | 2893 | |
| Unter Steinhof | city | Baden-Wurttemberg | Germany | 48.25 | 8.04 | 1138 | 7045 |
| Unter Stogenwald | city | Jihocesky Kraj | Czech Republic | 48.72 | 14.03 | 2509 | 2682 |
| Unter Stookham | city | Oberosterreich | Austria | 48.07 | 13.98 | 1669 | 5490 |
| Unter Swina | city | Plzensky Kraj | Czech Republic | 49.22 | 13.33 | 3349 | 2980 |