Malay Language was the lingua franca in the heyday of the Malacca Malay Sultanate. After independence, the functions of Malay language were dignified as the national language, under Article 152 of the Federal Constitution. It is simultaneously raised as the national ethos in guiding the country through the construction, strengthening and harmony phase of the country based on a multi-racial society. This study aims to measure the level of Malaysian youth's understanding on the functions of Malay language as an official language. Through a quantitative study using the survey method, a total of 987 youths were randomly selected as respondents. Besides, survey method uses a questionnaire that is constructed independently to obtain data and later analyze the responses to obtain mean values ​​and correlation values.