Halal duck is duck that has been slaughtered and prepared according to the methods laid down in the Qur'an, the holy book of Islam. Any duck that has been slaughtered to make it suitable for use by Muslims can be classified as halal duck. The animal must be blessed by the person who has killed it, and the blood must be drained out of it before it is eaten. There has been some debate among Islamic associations regarding whether meat slaughtered in the correct way by a machine is suitable for consumption and whether stunning the animal prior to killing is acceptable.

Islam as a religion sets down several rules about which meats are allowed to be eaten and which aren’t suitable, and things are classified as either halal, which is allowed, or haram, which is forbidden. The rules regarding which animals can and cannot be eaten by Muslims can be found in the Qur'an. For example, pork is not permitted to be eaten, nor are carnivorous animals. The rules regarding the slaughter of animals state that animals that died of natural causes and the blood of animals are not suitable for eating.

To prepare halal duck, the animal's throat must be slit by a single swipe of the knife, the duck must be blessed by the person who slaughtered it, and it must be hung so that the blood can drain out of it. This method is suitable for families who are slaughtering an animal to be eaten directly by them. One major difference between haram meat and halal meat is that animals killed for haram meat are often stunned using an electric shock before they are killed. Other differences are that the slaughtering isn't necessarily done by a person, and the animals are not blessed.

Modern food production practices have caused some controversy regarding halal meats. Some large food chains have begun producing halal meat so that their products can be eaten by Muslims. Many of the animals that these companies use for halal meat are stunned before having their throats slit, and although this is permissible according to certain halal food authorities, some Muslims disagree. The use of machines to slaughter and produce halal duck and other meats is also controversial for some Muslims but has been deemed acceptable by others.