Jalandhar (Punjabi: ਜਲੰਧਰ, Hindi: जलंधर (help·info)), is a city in Jalandhar District in the state of Punjab, India. It was kingdom of a devil namely Jalandhar in Satyuga. It was also known as Prasthala at the time of Mahabharta and it was also known as Jullundur in British times.
Jalandhar along with Multan is the oldest surviving city of the Trigarta Empire(Punjab region)of Katoch Rulers, with reference in history as far back as A.D. 100. The Jalandhar Doab ( the region surrounding the city between Beas and Sutlej rivers) also marked the eastern most territory of the empire of Alexander the Great. He erected giant altars in this area to mark the eastern most extent of his empire and also founded a city named Alexandria in the vicinity and left many Macedonian veterans there.
In the 7th Century, when the famous Chinese traveller and pilgrim Hiuen Tsang visited India during the reign of Harsha Vardhana, the Kingdom of Jalandhara or Trigartta was under the rule of Raja Utito (whom Alexender Cunningham identifies with the Rajput Raja Attar Chand of the Katoch dynasty). The kingdom was said to have extended 167 miles (269 km) from east to west and 133 miles (214 km) from north to south, thus including the hill states of Chamba, Mandi and Suket (Himachal Pradesh) and Satadru or Sirhind in the plains. The city proper of Jalandhar was, when visited by Hiuen Tsiang, a large city, miles in circuit, and functioned as the capital of a Rajput kingdom. Raja Utito was a tributary of Harsh Vardhana. The Rajput Rajas appear to have continued to rule over the country right up to the 12th century, with occasional interruptions, but their capital was Jalandhar and Kangra formed an important stronghold.
According to the Chinese pilgrim Fa Hien, who traveled India between 399 and 411 C.E., there were a great many Viharas of Buddhism in India. In the Jalandhar Doab, there were as many as 50 Viharas of Buddhism. The Buddhist religion was adopted by a large number of people. As per some historians and scholars the fourth Buddhist Council out of total six Buddhist Councils took place in Jalandhar in the first century AD during the reign of King Kanishka. The fourth council of Mahayana Buddhism took place here, and placed Buddha as a God at the council.
Jalandhar became the seat of Nath movement from 8th to 10th century AD, one of its greatest saint was Jalandhar Nath, whose samadhi later became the site of the existing shrine of Imam Nasir-ud-din Chishti in the fifteenth century . From the later half of the tenth century up to AD 1019, the district was included in the Shahi Kingdom of the Punjab and Jalandhar was an important city in the region. In about 1188 it fell to the control of Ibrahim Shah of Ghor. Under the Mughals Jalandhar was the capital of a sarkar.
In 1750 AD Maharaja Ghamand Chand of the Katoch dynasty was made the (first ever Rajput) Nizam of Jalandhar by the Durranis. Many Rajputs lived in and around the surrounding areas of Jalandhar before the partition in 1947. With the partition of the country, many like the Rawal Rajputs went to settle in the Pakistan side of the Punjab, whilst some went to other countries.
Jalandhar was burnt by the Sikhs in 1757 and captured by the Faizullahpuria confederacy in 1766. Ranjit Singh annexed it in 1811, and in 1846 Jalandhar became the headquarters of the territory acquired by the British after the first First Anglo-Sikh Wars.
During British rule Jalandhar became the headquarters, of the Division and District of the same name. According to the 1901 census, the population of the town was 67,535 of whom 14,715 were Hindus, 40,081 Muslim, 901 Sikhs, and 1,543 Christians.
The city has a humid subtropical climate with cool summers and hot winters. Summers last from April To June and winters from November to February. Temperatures in summer vary from average highs of around 48 degrees Celsius to average lows of around 25 degrees Celsius. Winter temperatures vary from highs of 19 degrees Celsius to lows of -5 degrees Celsius. The climate is on the whole dry except during the brief south-west monsoon season during July-August. The average annual rainfall is about 70 cm.
Jalandhar was a hub of the Gandhi government's green revolution of India in early 60s. Dr. Dilbag Singh Athwal, world renowned scientist in plant breeding, developed India's first high yield wheat KALYAN. The wheat he name afer his native village Kalyanpur 6 miles (9.7 km) southwest of city of Jalandhar. Later Dr. Athwal headed International Rice Research Institute, International Agricultural Development Service etc. Dr. Athwal took early retirement from his position as senior vice president Rockefeller Institute. The village Kalyanpur (now part of Jalandhar city) have produced prominent scientist including Dr. Raghbir Singh, Dr. Rajbir Kaur, Dr. Iqbal Singh Athwal.
Ja Jalandhar is also quite known for its electrical goods industry. Manufacturers like Standard Switchgears and Apex Electricals, located in Jalandhar. International sports market is situated in jalandhar.
The first language of most people in the city is Punjabi. The world Punjabi meet in 2007 was held in Jalandhar, and attendees noted the Punjabi language was losing its viability. However, many in the Punjab exhibit linguistic pride, and some scholars have opined that Punjabi may actually be gaining popularity as an indigenous medium of decolonization. Since English is taught in Jalandhar schools from the first grade, it has been gaining in popularity in the city as well, and there has been an explosion in English language education in the state. The Hindi language has also gained favor among businessmen, and has generally been the language of Punjabi Hindus, who claim Hindi as their mother tongue
The city is the media hub of the region having the regional headquarters of Newspapers, National Television and Radio stations. Leading dailies of the country such as: Ajit, Akali Patrika, Amar Ujala, Dainik Jagran, Dainik Bhaskar and Punjab Kesri are published from Jalandhar.
 Educational Institutions
Jalandhar is also home to some of the major educational institutions of the region. One such is the first private UGC recognised university: Lovely Professional University. It has a vast sprawling campus measuring to about 600 acres (2.4 km2) on national Highway 1 (GT road). The most important engineering institute is .Dr. B.R. Ambedkar National Institute of Technology, an Institute of National Importance, equivalent to the IITs and IISC. DAV Institute of Engineering and Technology (DAVIET), the Punjab Technical University, Govt. Tanning Institute, Apeejay Institute of Management, DAV College, DOABA College, Hans Raj Mahila Maha Vidyalaya (HMV), Kanya Maha Vidyalaya (KMV), Mehr Chand Polytechnic, Apeejay College of Fine Arts,Guru Nanak Dev University Regional Campus, Ladhewali, B.D. Arya Girls College, Lyallpur Khalsa College (Major Institute in Northern India having about 9000 students, imparting professional education in Computer Sc & IT), Trinity College, and Sant Baba Bhag Singh Educational Complex are some other prominent educational institutes.
 Doaba College Jalandhar
MULTI FACULTY POST GRADUATE CO-EDUCATIONAL PREMIERE INSTITUTION OF NORTHERN INDIA PIONEER AND PROMOTER OF PROFESSIONAL EDUCATION SINCE 1941  Notable graduates have included Yash Chopra, Swraj Paul ,Balwinder Vicy, Gurpreet Ghughi, and Prem Kumar Dhumal, Gurdev Pegany.
 DAV College Jalandhar
The DAV College Jalandhar, a college of Arts, Science and Commerce, has been in operation since its 1918 founding. It is distinguished as the largest in its region and the first four-star college by the National Assessment and Accreditation Council (NAAC)(2001). Notable graduates have included Har Gobind Khorana, Jagjit Singh, Sukhwinder Singh, and Hans Raj Hans.
 NIT Jalandhar
Dr. B.R. Ambedkar National Institute of Technology, Jalandhar (erstwhile Regional Engineering College) is the eighteenth NIT of the country. Government run, it has been conferred the title of being an Institute of National Importance. It was launched in 1987.
 DAVIET Jalandhar
DAV Institute of Engineering & Technology (DAVIET) Jalandhar has been in operation since 2001. It is distinguished as the largest educational organization in the country that is not government-run. The institute offers B. Tech program in six disciplines of Engineering namely Electronics & Communication Engineering, Computer Science Engineering, Information Technology, Mechanical Engineering, Electrical Engineering and Civil Engineering along with research programs leading to M.Tech. The Institute has recently started MBA program.
 Lyallpur Khalsa College
 Jalandhar Cantonment
Construction on Jalandhar Cantonment began in 1848. It is notable not only for its age, as it among the oldest cantonments in the country, but also for its proximity to Pakistan. It figured in the 1920 Connaught Rangers mutiny when Irish soldiers replaced the Union Flag with the Irish Republic's flag.
 Sister cities
 Famous people