Public holidays in Malaysia are regulated at both federal and state levels, mainly based on a list of federal holidays observed nationwide plus a few additional holidays observed by each individual state and federal territory. The public holidays are a mix of secular holidays celebrating the nation and its history, and selected traditional holidays of the various ethnic and religious groups that make up the country.

The legislation governing public holidays in Malaysia includes the Holidays Act 1951 (Act 369) in Peninsular Malaysia and Labuan, the Holidays Ordinance (Sabah Cap. 56) in Sabah and the Public Holidays Ordinance (Sarawak Cap. 8) in Sarawak.

The workweek and weekend varies between states, with most states and federal territories observing a Saturday–Sunday weekend, while Johor, Kedah, Kelantan and Terengganu observe a Friday–Saturday weekend, though in Johor many private businesses and banks observe the Saturday–Sunday weekend due to close business ties with Singapore. In states and territories with a Saturday–Sunday weekend, a public holiday that falls on Sunday is substituted by a holiday on Monday, or the next working day if Monday itself is a public holiday. In Johor and Kedah, a public holiday that falls on Friday is replaced by Sunday or the next working day, while in Kelantan and Terengganu, a public holiday that falls on Saturday is replaced by Sunday or the next working day.