Ş

It occurs in the Azerbaijani, Gagauz, Turkish, and Turkmen alphabets.

It commonly represents /ʃ/, the voiceless postalveolar fricative (like sh in shoe).

It is written as the letter S with a cedilla below and it has both the lower-case (U+015F) and the upper-case variants (U+15E).

It is also not present in the Windows 1250 (Central Europe) code page.

The letter was only added to the standard in Unicode 3.0, and some texts in Romanian still use Ş instead.

Appearance of S-cedilla in upper- and lower-case. The left is in the upper-case.
Romanian passport since January 2019, showing the substitution of Ş for Ș.
Appearance of comma (upper row) and cedilla (lower row) in the Times New Roman font.