| A. Korti krievu vidusskola | Schools and pre-schools | Rīga | |
| Russian University of Theatre Arts (GITIS) | Scientific institutions | Malyy Kislovskiy Pereulok 6, Maskava | |
| A. Popova Rīgas radiorūpnīca | Professional organisation | | |
| A. Rancāna izdevniecība | Publishing houses | | |
| A. Raņķa apgāds | Publishing houses | | |
| A. Reinbergs | Publishing houses | Lielā iela 17, Jelgava | |
| A. Šaņavska Maskavas Tautas universitāte | Universities | Miusskaya Ploshchad' 6, Moscow | |
| A. Spāgis 6-year Primary School | Organisation | Dunalka | |
| A. Spundes privātskola | Schools and pre-schools | | |
| A. Vallenburgeres 1. šķiras sieviešu ģimnāzija | Schools and pre-schools | Rīga | |
| A.G. Žilovas sieviešu ģimnāzija | Schools and pre-schools | | |
| a/s "Golts un Jurjāns" (1926–1932) | Publishing houses | Rīga | |
| A/S "Bekona Eksports" | Saimnieciskas organizācijas | | |
| A/S "Mežaparks" | Organisation | Rīga | |
| A/S Rīgas vilnas rūpniecība Kuršanskis un Himmelhohs | Saimnieciskas organizācijas | | |
| A/S Rīgas Zīds | Saimnieciskas organizācijas | | |
| Ābeļi Primary School | Organisation | Ābeļi | |
| Abgrunte Primary School | Organisation | Jelgava | |
| Abgunstes pagastskola | Schools and pre-schools | | |
| Abrenes latviešu ģimnāzija | Schools and pre-schools | | |