| # | Sīktēls | Organisation | Type | Location |
|---|---|---|---|---|
| 1951 | Sēlpils Danenfeldes pamatskola | Schools and pre-schools | ||
| 1952 | Sēļzemnieka apgāds | Izdevniecības un apgādi | ||
| 1953 | Sidgundas 8-gadīgā skola | Schools and pre-schools | ||
| 1954 | Sidnejas latviešu biedrība | Associations | Sidneja | |
| 1955 | The University of Sydney | Universities | ||
| 1956 | Signe | Izdevniecības un apgādi | Rīga | |
| 1957 | Siguldas astoņgadīgā skola | Schools and pre-schools | Sigulda | |
| 1958 | Sinoles pagastskola | Schools and pre-schools | Sinole | |
| 1959 | Sīpeles-Lustes pamatskola | Schools and pre-schools | ||
| 1960 | Skaistkalnes vidusskola | Schools and pre-schools | ||
| 1961 | Skolu muzeju biedrība | Public organization | ||
| 1962 | Skrindu dzimtas muzejs | Museums | Vabale | |
| 1963 | Skrivanek Baltic | Professional organisation | Rīga | |
| 1964 | Skrundas vidusskola | Schools and pre-schools | ||
| 1965 | Skujenes draudzes skola | Schools and pre-schools | Skujene |