S̈

S̈, s̈ in lower case, also s with diaeresis, is a letter in the Latin alphabet for the Chechen language, where it represents the voiceless postalveolar fricative . It has the same sound as the š used in Slavic languages written with the Latin alphabet, the Turkic/Romanian ş/ș and the common digraph "sh".

In the Chechen language, it was changed from the original ş into s̈, at the same time that ç was changed into c̈.