| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
1901  | Trient  Trient,Trient VS,Trient i Sveits,te li an,特里安 | Switzerland, Valais Martigny District > Trient | populated place population 137 | N 46° 3′ 28'' | E 6° 59′ 38'' |
| 1902 | Treyvaux Treyvaux,Treyvaux FR,te lei wo,特雷沃 | Switzerland, Fribourg Sarine District > Treyvaux | populated place population 1,349 | N 46° 43′ 40'' | E 7° 8′ 15'' |
| 1903 | Trey | Switzerland, Vaud Broye-Vully District > Trey | populated place population 207 | N 46° 46′ 12'' | E 6° 55′ 35'' |
| 1904 | Trans Trans,Traun | Switzerland, Grisons Viamala > Domleschg | populated place population 51 | N 46° 45′ 53'' | E 9° 27′ 40'' |
| 1905 | Torre Torre | Switzerland, Ticino Blenio District > Blenio | populated place population 279 | N 46° 29′ 20'' | E 8° 57′ 11'' |
| 1906 | Tomils Tomils,Tumegl,Tumegl/Tomils | Switzerland, Grisons Viamala > Domleschg | populated place | N 46° 45′ 42'' | E 9° 26′ 32'' |
1907  | Tödi Toedi,Tödi,ٹوڈی,ტედი | Switzerland, Grisons Surselva > Disentis/Mustér | mountains elevation 3614m | N 46° 48′ 41'' | E 8° 55′ 0'' |
| 1908 | Tobel | Switzerland, Thurgau Bezirk Münchwilen > Tobel-Tägerschen | populated place | N 47° 30′ 54'' | E 9° 2′ 0'' |
| 1909 | Titterten Titterten,di te teng,Титтертен,蒂特滕 | Switzerland, Basel-Landschaft Waldenburg > Titterten | populated place population 427 | N 47° 24′ 8'' | E 7° 42′ 57'' |
| 1910 | Laufenburg | Switzerland, Aargau Laufenburg District > Laufenburg | seat of a second-order administrative division population 3,632 | N 47° 33′ 35'' | E 8° 3′ 44'' |
| 1911 | La Tour-de-Trême La Tour-de-Treme,La Tour-de-Trême,Tour de Treme | Switzerland, Fribourg Gruyère District > Bulle | populated place population 3,686 | N 46° 36′ 38'' | E 7° 3′ 53'' |
| 1912 | La Sarraz | Switzerland, Vaud Morges District > La Sarraz | seat of a third-order administrative division population 1,734 | N 46° 39′ 31'' | E 6° 30′ 38'' |
| 1913 | Langwies Langvis,Langwies,lang wei si,Лангвис,朗維斯 | Switzerland, Grisons Plessur > Arosa | populated place population 278 | N 46° 49′ 9'' | E 9° 42′ 33'' |
| 1914 | Langnau Langnau,Langnau im Emmental | Switzerland, Bern Emmental District > Langnau im Emmental | seat of a second-order administrative division population 8,784 | N 46° 56′ 21'' | E 7° 47′ 14'' |
1915  | Längenberg | Switzerland, | region | N 46° 50′ 0'' | E 7° 25′ 0'' |
| 1916 | Landquart Landkvart,Landquart,Ландкварт | Switzerland, Grisons Landquart > Landquart | seat of a second-order administrative division population 8,886 | N 46° 57′ 0'' | E 9° 34′ 0'' |
| 1917 | Lamboing Lamboing,Lambuehn,lan bo yin ge,Ламбуэн,蘭博因格 | Switzerland, Bern Bernese Jura > Plateau de Diesse | populated place population 617 | N 47° 7′ 0'' | E 7° 8′ 5'' |
| 1918 | Lajoux Lajoux,Lajoux JU,Lajoux i Sveits,la ru,拉茹 | Switzerland, Jura Franches-Montagnes District > Lajoux (JU) | populated place population 668 | N 47° 16′ 44'' | E 7° 8′ 14'' |
| 1919 | La Heutte La-Eht,la e te,Ла-Эт,拉厄特 | Switzerland, Bern Bernese Jura > Péry-La Heutte | populated place population 471 | N 47° 11′ 26'' | E 7° 13′ 33'' |
| 1920 | La Fouly La Fouly | Switzerland, Valais Entremont District > Orsières | populated place | N 45° 56′ 0'' | E 7° 5′ 51'' |
| 1921 | La Ferrière La Ferriere BE,La Ferriere i Sveits,La Ferrière BE,La Ferrière i Sveits,la fei li ai,拉費里埃 | Switzerland, Bern Bernese Jura > La Ferrière | populated place | N 47° 8′ 34'' | E 6° 53′ 31'' |
| 1922 | Ladir Ladir,Leitura,la di er,Ладир,拉迪爾 | Switzerland, Grisons Surselva > Ilanz/Glion | populated place population 122 | N 46° 47′ 24'' | E 9° 12′ 5'' |
| 1923 | La Cure | Switzerland, Vaud Nyon District > Saint-Cergue | populated place | N 46° 27′ 53'' | E 6° 4′ 27'' |
| 1924 | Kyburg | Switzerland, Zurich Bezirk Pfäffikon > Illnau-Effretikon | populated place population 197 | N 47° 27′ 20'' | E 8° 44′ 41'' |
| 1925 | Küttigkofen | Switzerland, Solothurn Bucheggberg District > Buchegg | populated place population 241 | N 47° 9′ 4'' | E 7° 30′ 55'' |
| 1926 | Küblis Cuvlignas,Kjublis,Kublis,Kueblis,Küblis,qu bu li si,Кюблис,屈布利斯 | Switzerland, Grisons Prättigau/Davos > Küblis | populated place population 836 | N 46° 54′ 52'' | E 9° 46′ 45'' |
| 1927 | Krummenau Krummenau | Switzerland, Saint Gallen Wahlkreis Toggenburg > Nesslau | populated place population 1,453 | N 47° 14′ 51'' | E 9° 10′ 14'' |
| 1928 | Krinau Krinau | Switzerland, Saint Gallen Wahlkreis Toggenburg > Wattwil | populated place population 279 | N 47° 19′ 2'' | E 9° 3′ 1'' |
| 1929 | Kriechenwil Kriechenwil,Krikhenvil',ke li xing wei er,Крихенвиль,克里興維爾 | Switzerland, Bern Bern-Mittelland District > Laupen | populated place population 408 | N 46° 54′ 34'' | E 7° 13′ 10'' |
| 1930 | Krattigen Krattigen,ke la di gen,Краттиген,克拉蒂根 | Switzerland, Bern Frutigen-Niedersimmental District > Krattigen | populated place population 892 | N 46° 39′ 41'' | E 7° 43′ 40'' |
| 1931 | Kradolf Kradolf,Kradolf-Schoenenberg,Kradolf-Schönenberg | Switzerland, Thurgau Weinfelden District > Kradolf-Schönenberg | populated place | N 47° 31′ 30'' | E 9° 12′ 4'' |
| 1932 | Klosters Serneus Serneus,Serneus Dorf | Switzerland, Grisons Prättigau/Davos > Klosters | populated place population 4,044 | N 46° 53′ 21'' | E 9° 50′ 17'' |
| 1933 | Klosters Platz Claustra,Klosters,Klosters Platz | Switzerland, Grisons Prättigau/Davos > Klosters | populated place | N 46° 52′ 7'' | E 9° 52′ 53'' |
| 1934 | Klosters Dorf Dorfli,Dörfli,Klosters,Klosters Dorf,Klosters Dorfli,Klosters Dörfli | Switzerland, Grisons Prättigau/Davos > Klosters | populated place | N 46° 52′ 57'' | E 9° 52′ 33'' |
| 1935 | Klettgau | Switzerland, Schaffhausen | region | N 47° 41′ 37'' | E 8° 30′ 0'' |
| 1936 | Kleine Scheidegg Klajne-Shajdeg,Kleine Scheidegg,Passo Kleine Scheidegg,Клайне-Шайдег,クライネ・シャイデック | Switzerland, Bern Interlaken-Oberhasli District > Lauterbrunnen | mountain elevation 2061m | N 46° 35′ 7'' | E 7° 57′ 40'' |
| 1937 | Kleindietwil | Switzerland, Bern Oberaargau > Madiswil | populated place population 512 | N 47° 8′ 44'' | E 7° 47′ 22'' |
| 1938 | Klausen Pass Col du Klausen,Klausen,Klausen Pass,Klausenpas,Klausenpasset,Klauzen,Passo del Klausen,Клаузен,კლაუზ... | Switzerland, Uri Uri > Unterschächen | pass elevation 1948m | N 46° 52′ 5'' | E 8° 51′ 19'' |
| 1939 | Kiental Kiental,Kienthal | Switzerland, Bern Frutigen-Niedersimmental District > Reichenbach im Kandertal | populated place | N 46° 35′ 15'' | E 7° 43′ 28'' |
| 1940 | Kesswil Kesswil,Kesvil',kai si wei er,Кесвиль,凯斯威尔 | Switzerland, Thurgau Bezirk Arbon > Kesswil | populated place population 928 | N 47° 35′ 36'' | E 9° 19′ 2'' |
| 1941 | Kernenried Kernenrid,Kernenried,ke nei li de,Керненрид,克內里德 | Switzerland, Bern Emmental District > Kernenried | populated place population 449 | N 47° 4′ 10'' | E 7° 32′ 48'' |
| 1942 | Kempttal Kemptthal | Switzerland, Zurich Bezirk Pfäffikon > Lindau | populated place population 169 | N 47° 26′ 49'' | E 8° 42′ 15'' |
| 1943 | Kappel Kappel,Kappel am Albis | Switzerland, Zurich Bezirk Affoltern > Kappel am Albis | populated place population 211 | N 47° 13′ 41'' | E 8° 31′ 38'' |
| 1944 | Kandergrund Kandergrund,Kendergrund,kan de ge lun de,Кандергрунд,坎德格倫德 | Switzerland, Bern Frutigen-Niedersimmental District > Kandergrund | populated place population 995 | N 46° 33′ 43'' | E 7° 39′ 32'' |
| 1945 | Kaisten | Switzerland, Aargau Laufenburg District > Kaisten | populated place population 2,140 | N 47° 32′ 29'' | E 8° 2′ 36'' |
| 1946 | Kaiserstuhl Kaiserstuhl | Switzerland, Aargau Bezirk Zurzach > Zurzach | populated place population 373 | N 47° 34′ 5'' | E 8° 25′ 3'' |
| 1947 | Juf Juf | Switzerland, Grisons Viamala > Avers | populated place | N 46° 26′ 43'' | E 9° 34′ 46'' |
| 1948 | Jenins Gianin,Jenins | Switzerland, Grisons Landquart > Jenins | populated place population 745 | N 47° 0′ 5'' | E 9° 33′ 23'' |
| 1949 | Ittenthal Ittental,Ittenthal | Switzerland, Aargau Laufenburg District > Kaisten | populated place population 188 | N 47° 31′ 8'' | E 8° 3′ 30'' |
| 1950 | Isone Ison,Isone,Izone,yi suo nei,Ιζόνε,伊索內 | Switzerland, Ticino Bellinzona District > Isone | populated place population 388 | N 46° 7′ 43'' | E 8° 59′ 7'' |
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