Sawatdee ka, There are 32 vowels in Thai language - 14 long vowels and 18 short vowels. Vowel in Thai is called สระ [sà-rà] Long vowel is called สระเสียงยาว [sà-rà sĭang yaao] Short vowel is called สระเสียงสั้น [sà-rà sĭang sân] Here are all 32 vowels: I usually recommend my students to start learning the long vowels before … [Read more...] about Lesson 4 – Thai Vowels