| Aula Lettenweg | Aula Lettenweg 25 | Switzerland, Allschwil, Lettenweg 25, | -- | -- | | | |
| Alexandria | Alexandria | Romania, Alexandria | -- | -- | | | |
| Ålen | Ålen | Norway, Ålen | -- | -- | | | |
| Asnæs | Asnæs | Denmark, Asnæs | -- | -- | | | |
| Alba | Alba | Romania, Alba | -- | -- | | | |
| Apartman Sahne | Apartman Sahne (Apartman Stage) | Turkey, Istanbul, Koşuyolu Mah. Arda (Eski Gül) Sk. Şahin Apt. No:2/2-11A Kadıköy - İstanbul | -- | -- | | | |
| Albstadt | Albstadt | Germany, Albstadt | -- | -- | | | |
| Arbore | Arbore | Romania, Arbore | -- | -- | | | |
| Ayuntamiento de Sevilla | Ayuntamiento de Sevilla | Spain, Sevilla | -- | -- | | | |
| Arts, Salle des | Salle des Arts | France, Villennes-sur-Seine, 57 Place de la Libération | -- | -- | | | |
| Åmot | Åmot | Norway, Vinje, Telemark | -- | -- | | | |
| Altusried | Altusried | Germany, Altusried | -- | -- | | | |
| Adana DT Sahnesi (Adana DT Stage) | Hacı Ömer Sabancı Kültür Merkezi Sahnesi (Haci Omer Culture Center Theatre Stage) | Turkey, Seyhan/ADANA, Hacı Ömer Sabancı Kültür Merkezi Adana Devlet Tiyatrosu Sahnesi | -- | -- | | | |
| Apartman Sahne | Apartman Sahne (Apartman Stage) | Turkey, Istanbul, Koşuyolu Mh. Arda (Eski Gül) Sk. Şahin Apt. No:2/2-11A Kadıköy | -- | -- | | | |
| Agnes Sorma und die Irving Place Theatergesellschaft | Agnes Sorma und die Irving Place Theatergesellschaft | United States, Chicago | -- | -- | | | |
| Aalen | Aalen | Germany, Aalen | -- | -- | | | |
| Adjud | Adjud | Romania, Adjud | -- | -- | | | |
| Aizpute | Aizpute | Latvia, Aizpute | -- | -- | | | |
| Apartman Sahne | Apartman Sahne (Apartman Stage) | Turkey, Istanbul, Koşuyolu Mh. Arda (Eski Gül) Sk. Şahin Apt. No:2/2-11A Kadıköy | -- | -- | | | |
| Arosa | Arosa | Switzerland, Arosa | -- | -- | | | |
| Alexandre Dumas Théâtre | Théâtre Alexandre Dumas | France, Saint-Germain-en-Laye, 3 Rue Henri IV | -- | -- | | | |
| Apartman Sahne | Apartman Sahne (Apartman Stage) | Turkey, Istanbul, Koşuyolu Mh. Arda (Eski Gül) Sk. Şahin Apt. No:2/2-11A Kadıköy | -- | -- | | | |
| Ancona | Ancona | Italy, Ancona | 1892-09-29 | -- | 1892 | 1 | |
| Arizona Színház | Arizona Színház | Hungary, Budapest | 1991-11-29 | -- | 1991 | 1 | |
| Academy of Music | Academy of Music | Australia, Ballarat, 17 Lydiard Street South | 1891-04-23 | 1891-04-24 | 1891 | 1 | |
| Alta videregående skole | Alta videregående skole | Norway, Alta, Skoleveien 15 | 1997-11-03 | 1997-11-04 | 1997 | 1 | |
| Auditorio Municipal | Auditorio Municipal | Spain, Riba-roja del Túria | 2010-03-06 | -- | 2010 | 1 | |
| Asiàtic (Teatre Lope de Vega) | Asiàtic (Teatre Lope de Vega) | Spain, Barcelona, Carrer del Roser | 1907-10-19 | -- | 1907 | 1 | |
| Avenue Theatre | Avenue Theatre | United States, Brockway | 1904-05-07 | 1904-05-07 | 1904 | 1 | |
| Aula der Kantonsschule Hottingen | Aula der Kantonsschule Hottingen | Switzerland, Zürich, Minervastrasse 14 | 2006-02-02 | 2006-02-05 | 2006 | 1 | |
| Amphion Theatre | Amphion Theatre | United States, New York | 1895-11-18 | 1895-11-18 | 1895 | 1 | |
| Asmaløy skole | Asmaløy skole | Norway, Vesterøy, Vesterøy | 2005-11-08 | -- | 2005 | 1 | |
| Atchison | Atchison | United States, Atchison | 1910-11-04 | 1910-11-04 | 1910 | 1 | |
| Åfoss skole | Åfoss skole | Norway, Skien, Eikåsvegen 10 | 2006-09-18 | -- | 2006 | 1 | |
| Am Stram Gram Le Théâtre | Am Stram Gram Le Théâtre | Switzerland, Genève, Route de Frontenex 56 | 2004-09-24 | -- | 2004 | 1 | |
| Anfiteatro Fenice | Anfiteatro Fenice | Croatia, Rijeka | 1897-05-25 | -- | 1897 | 1 | |
| Annaberg | Annaberg | Germany, Annaberg-Buchholz | 1878-- | -- | 1878 | 1 | |
| Årbakka | Årbakka | Norway, Tysnes | 2005-09-16 | -- | 2005 | 1 | |
| Auditorio | Auditorio | Spain, Ceutí, Murcia, Calle de Vicente Martí, 36 | 2010-03-26 | -- | 2010 | 1 | |
| Akita | Akita | Japan, Akita | 2010-02-04 | -- | 2010 | 1 | |
| Allaktivitetshuset Koordinaten | Allaktivitetshuset Koordinaten | Sweden, Oxelösund, Järntorget 7 | 2019-09-21 | 2019-09-21 | 2019 | 1 | |
| Aardklop Festival | Aardklop Festival | South Africa, Potchefstroom | 2006-09-26 | 2006-09-30 | 2006 | 1 | |
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