Nedumangad is a municipal town in the Thiruvananthapuram district in the Indian state of Kerala. It is the headquarters of Nedumangad Tehsil and Nedumangad Revenue Division. It is a suburb of the extended metropolitan region of Thiruvananthapuram. It is located around 16 km (9.9 mi) to the north-east of Thiruvananthapuram on the State Highway 2. It is an important commercial center in the district. It is a growing commercial and educational hub and all important government institutions are situated in the town. The Nedumangadu market has significance in southern Kerala.

It is an important centre for commercial trade in hill products such as pepper and rubber. A wholesale market set up by the Department of Agriculture (with the assistance of the European Union) is also situated there.

Nedumangad panchayat was formed in 1936. It was one among the four Panchayats sanctioned by Sir C.P.Ramaswamy Iyer (Diwan-Thiruvithamcore). The others were Paravur, Boothapandi and Perumbavoor. In 1978 Nedumangad Municipality was established.

Nedumangad was a main center of trade in Thiruvananthapuram. Lower caste people were not allowed to enter in the trade markets (Chantha) of Nedumangad and items brought by them from their farms have to be placed outside and used to get a lower price. A group of people under the leadership of Ayyankali questioned this social injustice which resulted in a great revolt and fought back their rights to enter and sell the goods of lower caste people in Nedumangad market and the trade markets nearby. This is known as Nedumangad Chantha revolt.

There are still many opinions as to how the taluk Nedumangad got its name. It is said that there is a fruit called Neduvan and that it is the land of a local ruler named Neduvan. According to some historical sources, the old name of Nedumangad was Ilavallur Nadu.

The adivasis are the tribal people of the region. From 1677 to 1689 AD, Umayamurani, who ruled Travancore, lost a battle and escaped to Koyikkal Palace, Nedumangad. The queen sought the help of Kerala Varma to defeat the Mukkappappa. History has indicated that Kerala Varma defeated Mukulapada in Thiruvattar and took Umayamma Rani to Thiruvananthapuram. With the arrival of Umayamma Rani to Koyikkal Palace, merchants, gold smiths and the Tamil Brahmins who became Puajaris also settled here. The Tamil Brahmins became the heirs of most land in the area. The palace at Karipur, Pulellunthu Mallan's family head, Karippur Mudipura are some of the historical places linked to the ancient history of Nedumangad. Nedumangad Koyikkal palace is one of the few buildings that was built in the 15th century Kerala Architectural style. The historic Koyikkal Palace has been maintained since 1979 by the Kerala State Department of Archaeology. Nedumangad Street struggle was one of the historical struggles of the national movement during Independence. The LLA LP School, which started as "Pallalu school", is the first school to be established here. The first library was the Guruvayur Vidyalaya. Karimbikkavu Sree DharmaSastha Temple, Thirichittoor Siva-Vishnu Temple, Mannamkonam Sree Bhagavathy Temple, Indalayappan Temple, Ardhanarisheshwara Temple, Muthumariamman Temple, Melamcode Temple, Mutharamman Temple, Pathadavu, Pazhavadi Ganapati Temple, Paranthokha Bhagwati Temple, Nedumangad Town Muslim Jamaath Complex and the Christian Church are some of the oldest shrines in the region. Nedumangad's commercial history is connected with agriculture. Nedumangad Public Market is the largest market in the district of Thiruvananthapuram. It is the largest market for the hill stations and agricultural commodities. The Agrarian Sales Complex, by the Department of Agriculture, is set up with the help of the European Economic Community. Thiruvananthapuram - Chenkotta (State Highway 2) and Shorlakode – Nedumangad State Highway (SH 3) are the most important interstate routes passing through Nedumangad. The road that connects Ponmudi to Thiruvananthapuram City passes through Nedumangad. The distance from Nedumangad to the capital city is only 18 km. The first Folklore Museum and the Museum of Numismatics in Kerala was established at Nedumangad Koyikkal Palace on 27 March 1992. The Koyikkal Palace is located next to the municipal office. Liquid Propulsion Systems Centre (LPSC), a research and development centre functioning under Indian Space Research Organisation (ISRO), is located at Valiyamala near Nedumangad.

Nedumangad is located at 8°36′N 77°00′E / 8.6°N 77.0°E / 8.6; 77.0. It has an average elevation of 68 metres (223 feet).

It lies 18 km from Thiruvananthapuram on the way to Thenkasi and Ponmudi hill resort. It is the capital of the taluk and is unique for lacking a coastal belt and railway lines.^{[clarification needed]}