In Malaysia, Singapore and Brunei, Eid is also commonly known as Hari Raya Aidilfitri or Hari Raya Puasa. Hari Raya literally means 'Grand Day' i.e. 'The Day'. Muslims in Malaysia and Singapore celebrate Eid like other Muslims throughout the world. It is the biggest holiday in Malaysia and is the most awaited one. Shopping malls and bazaars are filled with people days ahead of Hari Raya, causing a distinctive festive atmosphere throughout the country. Many banks, government and private offices are closed for this holiday, which usually lasts a week.

The night before Eid is with the takbir which is held in the mosques or musallas. In many parts of Malaysia, especially in rural areas, pelita or panjut (oil lamps) are lit up in house compounds. Eid also witnesses a huge migratory pattern of Muslims, from big metropolitan cities to rural areas. This is known as balik kampung — literally going back to home town to celebrate Eid with one's parents. Special dishes like ketupat, dodol, lemang (a type of glutinous rice cake cooked in bamboo) and other Malay delicacies are served during this day.

It is common to greet people with "Selamat Hari Raya" or "Salam Aidilfitri" which means "Happy Eid". Muslims also greet one another with "maaf zahir dan batin" which means "Forgive my physical and emotional (wrongdoings)", due to the fact that Eid ul-Fitr is not only for celebrations but also the time for Muslims to cleanse their sins and strengthen their ties with relatives and friends.

It is customary for Malays to wear traditional Malay cultural outfit on the Eid. The outfit for men is called baju melayu which is worn together with kain samping (made out of songket) and songkok (a dark coloured headgear) while the women's are known as baju kurung and baju kebaya. It is also common to see non-Malay Muslims wear costumes of their culture.

Once the prayer is completed, it is also common for Muslims in Malaysia to visit the graves of loved ones. During this visit, they clean the grave, recite Ya-Seen, a chapter (surah) from the Qur'an and also perform the tahlil ceremony. All these are done to ask for God to forgive the dead and also those who are living.

The rest of the day is spent visiting relatives or serving visitors. Eid ul-Fitr is a very joyous day for children for on this day adults are especially generous. Children will be given token sums of money, also known as "duit raya," from their parents or elders.