Tonk is a town in Tonk district of the Indian state of Rajasthan. The town of Tonk is situated 95 km (60 mi) by road south from Jaipur, near the right bank of the Banas River. It is the administrative headquarters of Tonk District. Tonk was also the capital of the eponymous princely state of British India from 1817 to 1947. Kamal Amrohi's movie Razia Sultan were shot in Tonk in 1981–82. Famous places in Tonk include: Shahi Jama Masjid, Bisalpur Dam, Arabic Persian Research Institute, Sunhari Kothi, Hathi Bhata, Annapurna Dungri Ganesh Temple, Rasiya Ki Tekri, Kidwai Park, Ghantaghar, Kamdhenu Circle, Nehru Garden, Chaturbhuj Talab Lake. It is also known as Rajasthan's Nawabo ka shahar.

In the 2011 Indian census, Tonk had a population of 165,294, with 48% being female. 14% of the population is age six and under. Tonk has an average literacy rate of 68.62%: 77.68% in males, and 59.18% in females. In terms of religion, 48% were Muslim, 50% were Hindu, 1.8% were Jain and 0.2% others.

Muhammad Amir Khan (1769–1834), a leader of Pashtun descent from Salarzai sub-clan of Yusufzai Tribe, Village Jawarai (Jowar) of District Buner, Khyber Pakhtunkhwa. In 1806, Khan conquered the area, taking it from a retreating regime Yashwant Rao Holkar. The British government captured it in turn. Khan then received the state of Tonk from the British Government who returned it. In 1817, after the Third Anglo-Maratha War, Amir Khan submitted to the British British East India Company and kept his territory of Tonk while receiving the title of Nawab. Tonk was founded one year later after Khan was granted land by the ruler of Indore.

A municipality was established at Tonk in 1885.

Black deer (Krishna Marg) are found in abundance in Rani Pura Gram Panchayat in Uniara subdivision of Tonk district. The state government has declared it a protected area for their conservation.

• Tonk (princely state)
• Wali Hasan Tonki

• Genealogy of the ruling chiefs of Tonk