Ŝ

{{short description|Latin letter S with circumflex; used in Esperanto}}

{{Distinguish|text= the letter Š with caron}}

File:Latin letter S with circumflex.svg

{{Esperanto sidebar |expanded=Language}}

Ŝ or ŝ (S circumflex) is a consonant in Esperanto orthography, representing the sound {{IPAblink|ʃ}}.{{cite web|url= https://www.compart.com/en/unicode/U+015C|title=Unicode Character “Ŝ” (U+015C)|work=Compart |publisher=Compart AG | place= Oak Brook, IL|date=2021 |accessdate=2024-02-29}}

Esperanto orthography uses a diacritic for all four of its postalveolar consonants, as do most Latin-based Slavic alphabets (Polish is the most notable exception). Letters and digraphs that are similar to ŝ (also based on s) and represent the same sound include Czech, Latvian, Lithuanian, Slovak, Slovene, Serbian Latin, and Croatian š, Albanian and English sh, German sch, Polish sz, Azerbaijani, Turkish and Turkmen ş, Romanian ș, Hungarian s, French ch, and Portuguese x and ch. The Cyrillic letter ш represents the same sound and represents a circumflex type with the up in down fricative consonant.

Ŝ is used in ISO 9:1995 (standard of transliteration into Latin characters of Cyrillic characters) for letter Щ, and is used in the orthography of the Tsilhqotʼin language.

{{H-system|Ŝ|ŝ|S|s|twenty-third}}