|— district —|
|Elevation||248 m (814 ft)|
|Time zone||IST (UTC+5:30)|
|Vehicle registration||UP 19|
|Sex ratio||1000:928 ♂/♀|
Shamli (formerly Prabuddh Nagar) is a district in the Indian state of Uttar Pradesh. The district was carved out of Muzaffarnagar district on 28 September 2011 as Prabudh Nagar and renamed Shamli in July 2012. The district is located approximately 100 km from Delhi along the Delhi–Saharanpur highway. Shamli lies in the fertile Doab region and hence the major occupation is agriculture. The district is known for its sugar mills and supplies sugar to neighbouring areas.
According to legend, Shamli is the place where Lord Krishna rested overnight before going for his last attempt of a truce, thus avoiding Mahabharata; its previous name was "Shyama vali." After several years, it came to be known as "Shamli."
The area was prominent during the first struggle for freedom against the East India Company in 1857, but the British army later recaptured the area. The town also witnessed important wars such as the Battles of Panipat and the battles during the rise of the Sikhs.
The district was also at the centre of the successful Green Revolution that helped India become self-sufficient in food production and gave the country confidence during the years after the end of British occupation.
The district was carved out of Muzaffarnagar district in September 2011 and named Prabubudh Nagar. Shamli and Kairana tehsils of Muzaffarnagar formed the new district. It was renamed Shamli in July 2012 by the Uttar Pradesh government. After formation the district its first "Zila Panchayat Adhayaks" election has been completed and CH. Maneesh Gurjar won the election.
Shamli is located at 29.45°N 77.32°E. It has an average elevation of 248 metres (813 feet). It is around 100 km from Delhi, 38 km from Panipat, 85 km from Meerut, 40 km from Karnal and 65 km from Saharanpur. It lies to the east of the Yamuna River, which marks the borders of two Indian states, Haryana and Uttar Pradesh. The district lies in the fertile Doab region between the Ganges and the Yamuna.
According to the 2001 census, males constitute 54 percent of the population and females 46 percent. Shamli has an average literacy rate of 59.5 percent, which is lower than the national average of 64 percent. Male literacy is 70 percent and female literacy is 57 percent. In Shamli, 15 percent of the population is under 6 years of age.
Major industries include agriculture and retail. The standard of living is high because of several factors, including the rich farmland of the Doab between the Ganges and the Yamuna, the network of sugar mills in the area, and the proximity and easy access to Delhi and other important industrial towns. It is also famous for its steel industry and is known as an international maker of wheel rims.
Hanuman Tilla, one of the most revered temples of West Uttar Pradesh, is located in Shamli. It is believed to have been built by the great warrior Bhima, one of the Pandavas in the epic Mahabharata. It is also rumored to have been a place where Lord Krishna had a night halt during his last attempt to avoid Mahabharata and hence was named after him. Another fable describes Shamli as a place where Lord Hanuman rested during his journey to fetch "Sanjivani Booti" from the Himalayas for Laxman.
Notable people 
- The cricket player Praveen Kumar is from the village of Taprana.
- Several poets have come from the town of Ailum, including Vishrant Vasisth, Rajendra Rajan, and Shamsher Bahadur Singh.