Cuatrillo (capital: Ꜭ, small: ꜭ) (Spanish for "little four") is a letter of several colonial Mayan alphabets in the Latin script that is based on the digit 4. It was invented by a Franciscan friar, Alonso de la Parra, in the 16th century to represent the velar ejective consonant /kʼ/ found in Mayan languages, and is known as one of the Parra letters.
The cuatrillo is encoded in Unicode at the code points U+A72C Ꜭ latin capital letter cuatrillo (HTML
Ꜭ) and U+A72D ꜭ latin small letter cuatrillo (HTML
ꜭ), respectively. The cuatrillo-commas are at U+A72E Ꜯ latin capital letter cuatrillo with comma (HTML
Ꜯ) and U+A72F ꜯ latin small letter cuatrillo with comma (HTML