There are 44 consonant characters in Thai representing 20 consonant sounds. For each consonant item shown here, the first letter is the consonant form (usually pronounced with "Í" "aw" vowel); the word after that alphabet is the name identifying that alphabet.
The 44 consonants are grouped into 3 classes: HIGH, MID and LOW, classified by their tonal quality, i.e. their inherent tones and their tonal interaction with the tone marks. HIGH consonants are shown in red, MID consonants are shown in black, and LOW consonants are shown in blue.
Of these 44 consonants, 2 are obsolete: and .
The following listing (reading across and then down) follows Thai alphabetical order.
There are 5 tones in Standard Thai: mid, low, falling, high and rising.
The following is a chart of average fundamental frequency contours for tones adapted from the chart given in Jackson Gandour (1976).
Graphics courtesy of firstname.lastname@example.org
Click here for Gandour's original chart as it appeared in his thesis.
|low or falling tone|
|falling or high tone|
The tonal value of the tone marks depends on the class of the initial consonant and the type of syllable (open or closed syllable) that they mark. The following table gives the form and tonal value of the tone marks, when used with initial consonant of each consonants class in live syllable:
|Tone Marks||No Mark|
|"High" consonants|| |