Malappuram district is a district located in the Indian state of Kerala. It is situated in the northern part of the state, and covers an area of approximately 3,550 square kilometers. The district is bounded by the Arabian Sea to the west, Kozhikode district to the north, Wayanad district to the northeast, Palakkad district to the east, and Thrissur district to the south. 

The district is characterized by undulating terrain, with hills and valleys interspersed throughout. The Western Ghats run through the eastern portion of the district, while the coastal plains lie to the west. The Kadalundi River, which originates in the Western Ghats, flows through the district and empties into the Arabian Sea. The Chaliyar River, another major river, also flows through the district. 

The district is known for its diverse flora and fauna, with several wildlife sanctuaries and national parks located in the area. The Silent Valley National Park, which is located in the eastern part of the district, is one of the most prominent national parks in the region. The district is also home to several waterfalls, including the Athirappilly Waterfalls, which are located on the Chalakudy River. 

The district is predominantly rural, with agriculture and animal husbandry being the major sources of livelihood for the people. The district is also known for its high level of literacy, with several prominent educational institutions located in the area.