| self-taught | samouk |
| selfheal | głowienka |
| selfhypnosis | autohipnoza |
| selfie | samojebka |
| selfishness | egoizm |
| Selfmate | Samomat |
| Selfoss | Selfoss |
| Selftimer | Samowyzwalacz |
| Selgros | Selgros Cash and Carry |
| Selichot | Selihot |
| Selim Ben Achour | Selim Ben Achour |
| Selim I | Selim I Groźny |
| Selim II | Selim II |
| Selim III | Selim III |
| Selje | Selje |
| Seljuk Empire | Sułtanat seldżucki |
| Seljuk Sultanate of Rûm | Sułtanat Rum |
| Seljuk Turk | Sułtanat seldżucki |
| Seljuk Turks | Sułtanat seldżucki |
| Seljukids | Sułtanat seldżucki |
| Seljuq dynasty | Sułtanat seldżucki |
| Seljuqs | Sułtanat seldżucki |
| Selkie | Selkie |
| Selkup | Selkupowie |
| Selkup language | Język selkupski |
| sell | sprzedawać |
| Sell door-to-door | Kolportować |
| Sella group | Nalón |
| Sella River | Nalón |
| Sella turcica | Siodło tureckie |
| Sellapan Ramanathan | Sellapan Rama Nathan |
| Selle Français | Selle français |
| seller | sprzedawca |
| Sellick Maneuver | Rękoczyn Sellicka |
| sellotape | taśma klejąca |
| Sellye | Sellye |
| Selma | Selma |
| Selma Björnsdóttir | Selma Björnsdóttir |
| Selma Lagerlöf | Selma Lagerlöf |
| Selman Waksman | Selman Waksman |
| Selo | Wieś |
| Selonian language | Język seloński |
| Selonians | Zelowie |
| Selous Scouts | Selous Scouts |
| Selters | Selters |
| Seltjarnarnes | Seltjarnarnes |
| selvage | listwa |
| Selydove | Sełydowo |
| Selûne | Selûne |
| SEM | Sem |
| Semacode | Semacode |
| Semang | Semangowie |
| semantic | semantyczny |
| Semantic Web | Semantic Web |
| semantics | semantyka |
| Semarang | Semarang |
| Semarang Regency | Semarang |
| Sembrancher | Sembrancher |
| Semele | Semele |
| semen | nasienie |
| Sementina | Sementina |
| Semerkhet | Semerchet |
| semester | semestr |
| Semetic | Ludy semickie |
| Semey | Semej |
| Semi Automatic Ground Environment | SAGE |
| Semi Contact | Semi contact |
| Semi-arid climate | Półpustynia |
| semi-automatic pistol | pistolet samopowtarzalny |
| Semi-automatic rifle | Karabin samopowtarzalny |
| Semi-circle | Łuk |
| Semi-continuity | Półciągłość |
| semi-dry | półwytrawny |
| Semi-empirical mass formula | Model kroplowy |
