|Nickname(s): "Oil Town"|
|Elevation||121 m (397 ft)|
|• Rank||16th In Assam|
|• Official||Assamese, English|
|Time zone||IST (UTC+5:30)|
Duliajan (Assamese:দুলীয়াজান) is an industrial town located in Dibrugarh District in the upper north-east corner of India. The town is situated about 45 km east of Dibrugarh City. It is particularly known for its oil related industries, Oil India Limited, one of the country's largest oil and gas companies is headquartered in Duliajan, and Assam Gas Company Limited, which carries out business related to natural gas in India, owned by the Government of Assam.
Duliajan derived its name from "Dulia" meaning "palanquin-bearers" of the Ahom kings and "Jan" meaning "a river stream". The Ahom kings, also known as Swargadeos, were very fond of hunting in the Upper Dihing forests. The Swargadeos would come by boats from their capital of Gargaon and Rangpur (in Sivasagar district) down the Dikhow river to the mighty Brahmaputra, then row uptream, enter the Dihing river and halt at the mouth of the stream near Tipling-Ghat in present day Duliajan. The stream was a guiding pathway for the palanquin bearers of the Swargadeos. Thus, when a new oil town was constructed in this area, to honour the palanquin bearers, it became a natural choice for the historical name of Duliajan.
As per another legend, Dulia khel (a sub-community of Ahom) first settled on the bank of a small rivulet Duriajan which is still in the village of Kachari Pathar, near Duliajan. This Duriajan became Duliajan after it was used by the Dulia community and gradually people started calling the rivulet Duliajan. From this rivulet the whole area of this locality latter came to be called Duliajan. After the Ahom king Suhanfa was killed in a conspiracy, according to prevalent custom those days, the ministers of Suhanfa’s cabinet selected his son Supinfa as his successor. Immediately after ascending the throne, Supinfa investigated the killing of his father and found one of his minister Laturban and his sons as the main conspirators. Swargadeo Supimfa then ordered that Laturban and his sons be beheaded for the heinous crime. Accordingly, on the banks of a small river, far away from the Ahom capital, the order was carried out. As the place was far from the capital and near to a river bank, the place came to be known as ‘Duroijan’ where duroi means far long and Jan means rivulet in Assamese language. It is said from ‘Duraijan’ the word Duliajan came in focus.
There is no official record about the exact date of declaration of the beautiful oil town as Duliajan. But it started initially with a nucleus of experienced personnel drawn from the Assam Oil Company (AOC) as well as Burmah Oil Company (BOC), the pioneer organizations of Digboi Oilfield. Oil India formally set up its own organization on 1 January 1962 to look after all aspects of drilling and exploration operations, with its headquarters at Duliajan, then known as Zaloni in the Nahorkatiya area.
The establishment of Duliajan oil town may be said to have brought about an era of petroleum industries in the district of Lakhimpur which then comprised the present districts of Dibrugarh and Tinisukia on the south bank and Lakhimpur and Dhemaji on the north bank of the river Brahmaputra. Since its establishment, this fast growing town has been playing a vital role in the state’s as well as country’s economy.
In Duliajan, the climate is warm and temperate. In winter there is much less rainfall than in summer. According to Köppen and Geiger, the climate is classified as Cwa. The average annual temperature in Duliajan is 23.2 °C. The average annual rainfall is 2528 mm. The driest month is December with 21 mm. Most precipitation falls in July, with an average of 489 mm. The warmest month of the year is August with an average temperature of 27.8 °C. In January, the average temperature is 16.1 °C. It is the lowest average temperature of the whole year.
The difference in precipitation between the driest month and the wettest month is 468 mm. The average temperatures vary during the year by 11.7 °C.
As of 2001 India census, Duliajan had a population of 23,763. Males constitute 53% of the population and females 47%. Duliajan has an average literacy rate of 84%, higher than the national average of 59.5%: male literacy is 87% and, female literacy is 80%. In Duliajan, 10% of the population is under 6 years of age.
Duliajan is well linked to the cities and towns of the state and also to the rest of the country. The closest airport is the Mohanbari Airport in the outskirts of Dibrugarh, which is at a distance of 41 km and connects the rest of the country to the Oil Town. From the airport, there are taxis available to Duliajan.
The town also has a railway station for transportation within Assam and the rest of the country. As the closest railway junctions are at Dibrugarh and Tinsukia (which is at a distance of only 20 km), most trains do not stop at Duliajan even when they pass through the town. However, the few trains that make stoppages at the station are Kamrup Express, Intercity Express, Dibrugarh-Kamakhya SPL, New Tinsukia-Ranjendra Nagar SPL and Dibrugarh-Rangiya SPL.
Road transport is another important backbone for the town to connect with the rest of the state. Easily accessible by road by a branch-off (40 km) from national highway NH-37, Duliajan is also well connected to the nearest district headquarters of Tinsukia and Dibrugarh. NH-37 traverses the state of Assam connecting all major towns and cities. Buses, both private and ASTC, on a daily basis, ply to Guwahati, Nagaon, Jorhat, Dibrugarh, Tinsukia and even to parts of Arunachal Pradesh. Buses are sometimes, locally referred to as "Supers".
Nearby Tourist Attraction
For the discerning nature lover, Duliajan is a veritable bounty, with some extraordinary sights to savour in and around the town. Assam is among the largest tea growing areas of the world and a visit to the neighbouring tea gardens is a must. The township and oilfield of Digboi is a multi-century-old treasure that shouldn’t be missed by anyone, oilman or not.
Further east is Arunachal Pradesh, the frontier state on India's eastern borders. Here virgin forests and mountains, and gushing streams and rivers await the explorer. One can travel to the last post on the Indo-China border along Stilwell Road, a remnant of World War II, recently opened to the public.
To the west lie the plains of Assam draped by the great Brahmaputra River, one of the largest water systems of the world. 150 km from Duliajan is Sibsagar, which houses the historic ruins of the Ahom kingdom, rulers of Assam's bygone era. About 220 km away in the middle of the Brahmaputra is Majuli, the largest riverine island in the world, at the moment fighting an ecological battle wrought upon it by the river.
Further west, around 270 km from Duliajan is Kaziranga National Park. Home to the one-horned rhinoceros and an exotic spot of bio-diversity, the Park is open to visitors from November to April. Some other ecological parks which are more nearer to Duliajan are Dibru Saikhowa National Park and Dehing Patkai Wildlife Sanctuary.
About 15 km from Duliajan, is the Tai-Phakey Eco Tourism Camp which has an Eco-camp at Tipam Phakey village with traditional fooding and lodging facilities. This includes lodging capacity for 10 to 16 members per night, enjoy family picnic at Burhidihing river, swimming at Burhidihing river, a memorable insight into ethnic Tai-Phakey culture and living styles (which has close relations with Thai culture), trekking, bird watching, library and much more.
Some of the prominent educational institutions of Duliajan:
- Duliajan College
- Duliajan Girl's College
- Kendriya Vidyalaya
- Oil India Higher Secondary School
- Delhi Public School, Duliajan
- St.Xaviers H.S School
- Tipling Ghat High School
- Duliajan Jatiya Vidyalaya
Following are some well-known accommodations in the town which are within 5 km from the railway station:
- Hotel Kanchanjungha
- Hotel Surabhi(Mayuri)
- Hotel Zongki Panoi
- Pronami Lodge
- Ishan Guest House
- Hotel Angel
- Gargo Guest House
- Oil India Guest House (only for OIL Employees)
OIL India Hospital, Duliajan is run by the OIL India Limited. It mainly facilitates for the employees of the OIL India company and also for outsiders who resides in Duliajan. It is well maintained with all modern equipments. It is located just near to the Nehru Maidan.
AGCL (Assam Gas Company Limited) Medical Centre is run by the public sector Assam Gas Company. It is located inside the campus of the company.
Life Care Nursing Home is a privately owned Hospital located at Tipling Road, Jayanagar.
In addition to these, there are a some well-known clinics namely Drug Home, Duliajan Homoeo Clinic and Sanjeevani Diagnostics. 
Sports has always been an important and enthusiastic topic for the locals of the town. The local youths and children indulge in different sports throughout the year. Football, cricket, lawn tennis, table tennis, badminton, swimming, squash, golf and martial arts are the most popular ones. The two main town clubs, Duliajan Club and Zaloni Club, provide the basic sports facilities and trainings for enthusiastic local kids from an early age.
The Oil India Ground or Nehru Maidan, which is also the home ground of Oil India Ltd FC, has hosted a number of national and state level football tournaments. District level cricket tournaments have also been hosted here. It has a capacity of 10,000 people.
By being the headquarters of OIL, Duliajan has become home to people from all corners of the country, some of whom have settled down to start businesses and others as employees in OIL. The main festivals celebrated are Bihu, Krishna Janmashtami, Maha Shivaratri, Eid al Fitr, Eid al-Adha, Durga Puja, Kali Puja, Saraswati Puja, Dussehra and Vishwakarma Puja. Chhath Puja is celebrated by the Bihari community and Ganesh Chaturthi is mainly celebrated by the Telugu community of the town.
Rath Yatra or Kang is celebrated by the Manipuri community to worship Lord Jagannath.
Me-Dam-Me-Phi is celebrated by the Tai-Ahom community on 31 January every year in memory of the departed. It is the manifestation of the concept of ancestor worship that the Ahoms share with other peoples originating from the Tai-Shan stock. It is a festival to show respect to the departed ancestors and remember their contribution to society.
Duliajan is very often considered as a major hub for Oil India Limited. But in recent years many new institutions/enterprises in different areas/fields are coming up. Fofatt  - A game development startup is such an example. 
- Plabita Borthakur, a Bollywood actress was born in Duliajan. She did her schooling from Delhi Public School, Duliajan. The 'Manu' from the band Manu&Chow, she acted in the very renowned flim PK.
- Dipannita Sharma, a Bollywood actress was born in Duliajan. She did her schooling from Kendriya Vidyalaya, Duliajan. She is now married and settled in Mumbai.
Duliajan is part of Dibrugarh (Lok Sabha constituency). Amiya Gogoi of Congress is the sitting MLA from the Duliajan seat in Legislative Assembly. Rameswar Teli an Indian politician from Duliajan, and a member of the Bharatiya Janata Party has been elected to the Lok Sabha from the Dibrugarh (Lok Sabha constituency) in the general elections of 2014.
- "Oil India Ltd. Headquarters". Retrieved 14 June 2011.
- "Assam Gas Company Limited". Retrieved 26 November 2012.
- http://www.assamtourism.org/festival.php Rameswar Teli
- "The right breaks".
- "List of Parliamentary & Assembly Constituencies" (PDF). Assam. Election Commission of India. Retrieved 2008-10-06.
- Rameswar Teli