Coconut jam, also known as kaya jam or simply kaya, is a sweet spread made from a base of coconut milk, eggs, sugar and sometimes pandan leaves as a flavouring. It is popular throughout Southeast Asia.

The origins of kaya are subject to various interpretations. Some sources suggest it is a Eurasian jam unique to Singapore and Malaysia, adapted from a Portuguese egg jam. Others propose that Hainanese immigrants created kaya toast by adapting what they had previously prepared while serving on British ships during the Straits Settlements period.

In Thailand, a similar spread is known as sangkhaya, while in the Philippines, an eggless version called matamís sa báo is made from coconut cream and sugar.

The spread's widespread popularity across these regions has led to various adaptations and flavors, making kaya a versatile and beloved component of Southeast Asian cuisine.

The word for coconut jam in the Malay language, kaya, means rich, referencing the texture of the popular food. It is also called srikaya. In Malaysia, Indonesia and Singapore, kaya has a creamy texture. It is made from coconut milk (locally known as 'santan') and duck or chicken eggs, flavored with pandan leaves and sweetened with sugar. The resulting color varies depending on the color of the egg yolks, the amount of pandan, and the extent of the caramelization of the sugar. As a popular local spread, kaya is typically spread on toast to make kaya toast and eaten in the morning, but is also enjoyed throughout the day. Kaya can be found in most kopitiam and night markets.

Different varieties available include the nyonya kaya, which is of a lighter-green color, and Hainanese kaya, which is of a darker brown and uses caramelized sugar, and is often further sweetened with honey.

In this region, kaya is also used as a topping for several desserts including pulut taitai or pulut tekan, a dessert of sweet glutinous rice colored blue with butterfly pea flowers (bunga telang), and pulut seri muka, a similar dessert but colored green due to adding pandan leaves. It is also used with glutinous rice to make kuih seri kaya.

Philippine coconut jam is known as matamís sa báo (also matamís na báo or minatamís na báo, among other names). The names literally mean "sweetened coconut". It is different from other Southeast Asian versions in that it uses coconut cream (kakang gata, the first and second press of grated coconut meat) and cane sugar extract or molasses (treacle). It also does not use eggs and thus is more like syrup rather than custard. It is often eaten on toast or pandesal or used as a filling for pan de coco. When it is mixed with ground glutinous rice paste, it becomes a popular dessert known as kalamay.