Encyclopedias, Almanacs, Transcripts, and Maps
- Sinabung, Mount
- Sinai campaign
- Sinanthropus pekinensis
- Sinclair, Sir John
- Singanallur
- Singh, Manmohan
- Singh, Vijay
- Singhalese
- Singles/Never Married Persons
- Singleton, Benjamin
- Sinha, Satyendra Prassano, 1st Baron Sinha of Raipur
- Sining
- Siniora, Fouad
- Sinkiang
- Sint-Niklaas
- Sint-Truiden
- Sinuiju
- Sinus Arabicus
- Sinyang
- Sinyavsky, Andrey Donatovich