The Vietnamese alphabet has the following 29 letters, in collating order: Vietnamese also uses the ten digraphs and one trigraph below. These groups were formerly considered single letters and one can find them in older dictionaries. They are no longer considered single letters for collating and similar purposes; so, for example, "CH" will be collated between "CA" and "CO" in modern dictionaries.

The letters "F", "J", "W" and "Z" are not part of the Vietnamese alphabet, but are used in foreign loan words. "W" is sometimes used in place of "Ư" in abbreviations. In informal writing, "W", "F", and "J" are sometimes used as shorthands for "QU", "PH", and "GI", respectively.