Bengali cuisine is the culinary style of Bengal, comprising Bangladesh, the Indian state of West Bengal, and Assam's Karimganj district. The cuisine has been shaped by the region's diverse history and climate. It is known for its varied use of flavours including mustard oil, as well as the spread of its confectioneries and desserts. There is a strong emphasis on rice as a staple, with fish traditionally the most common protein. Freshwater fish are preferred to seafish, although barramundi, known as bhetki, is also common. Meat is also a common protein among Bengalis, with chicken and mutton being the most popular. Beef is popular within the Muslim community. In more recent times, lentils have begun to form a significant part of the diet. Many Bengali food traditions draw from religious and social functions, such as adda, Poila Boishakh, Eid, and Durga Puja.

Muslims conquered Bengal around the mid-thirteenth century, bringing with them Persian and Arabic cuisine. Such dishes as korma and bhuna had once been meals of the higher courts, but the cooks of the Mughals brought their recipes to the lower and middle classes. The influence was reinforced during the rule of the British Raj, where Kolkata became the place of refuge for many prominent exiled Nawabs, notably the family of Tipu Sultan from Mysore and Wajid Ali Shah, the ousted Nawab of Awadh. The exiles brought with them hundreds of cooks and masalchis (spice mixers), and as their royal patronage and wealth diminished, they became interspersed into the local population. These cooks came with the knowledge of a very wide range of spices (most notably jafran and mace), the extensive use of ghee, and marinating meat with yoghurt and chilli.

In Bangladesh, this food has become common fare for the population while in West Bengal, they have remained the food of professional chefs. Further innovations include chap (ribs slow cooked on a tawa), rezala (meat in a thin yogurt and cardamom gravy) and kathi roll (kebabs in a wrap).

The Mughals had a particular fixation on meat, bringing mutton and beef into mainstream Bengali cuisine as well as already known kinds of meat like chicken and venison.

Furthermore, traditional desserts had been primarily based on rice pastes and jaggery, but under Mughal influence moved towards significantly increased use of milk, cream, and sugar along with expensive spices such as cardamom and saffron.

In Bengali Hindu tradition, widows were not allowed to eat foods that would not be classified as "bitter", necessitating experiment and innovation. While most Bengali castes ate meat and fish, this was barred for widows. Widows also could not use "heating" foods such as shallot and garlic, but ginger was allowed. This style found a core place in Bengali curries in general, both vegetarian and non-vegetarian. Expensive spices such as saffron, cinnamon or cloves were used very sparingly—if at all. Nuts, dry fruits, milk and milk products (such as cream, ghee or curd) were similarly scarce. These economic and social restrictions influenced Bengali widows to create a brand new set of meals that utilised only vegetables and cheap spices.

The large-scale displacement along religious lines as a result of the partition led to changes in meal-taking, so as to adhere to religious restrictions. In Bangladesh (former East Bengal and East Pakistan), Mughlai food is common, and includes foods that are less popular in West Bengal, such as beef kebab. Additionally, sweets such as zarda and firni-payesh are eaten. In rural Bangladesh, many people eat makna fried, popped, or raw.

During the colonial period, many Western food shops were established in Kolkata, making puff pastries, channa, chocolate, and chips especially popular. Dishes such as chop, gravy cutlet, sponge rasogolla, and ledikeni. As a result of a multi-cultural community, Kolkata city's cuisine continuously changes, and takes heavy influence from Chinese and European palates.