Vietnamese punctuation (Vietnamese: chấm câu) refers to the usage of punctuation marks in Vietnamese texts.

Historically, the Vietnamese language was written using chữ Nôm, a script that incorporated both Chinese characters and locally invented characters to represent native Vietnamese words. This writing system coexisted with Literary Chinese (Hán văn), which was the primary medium for official documents, scholarly works, and formal communication in Vietnam.

Text featured marks referred to as gia điểm (chữ Hán: 加點), these marks were largely based on Chinese practices.

The usage of these two punctuation marks have some flexibility, varying between manuscripts. In some cases, both marks are positioned at the bottom right of the character, while in others, the mark 句 (cú) appears at the bottom right, and 讀 (đậu) is placed at the bottom center. These usages may differ, there were also manuscripts that were not punctuated. Scholars had to either rely on line breaks in the text called 斷句 (đoạn cú) or their mastery of Literary Chinese grammar.

There were also marks to denote alternative pronunciations, grammar, and errors.

Although undergoing current research, it has also been theorized that Vietnamese Literary Chinese texts were read in Vietnamese similar to Japanese kanbun kundoku with annotation marks (レ) appearing on the bottom-left after introductory topic phrases. Examples include marks marking 者 giả and 而 nhi are supposed to be read as thì and mà.

After Vietnam switched to the Vietnamese alphabet, European punctuation was adopted in favor of traditional punctuation.