Udupi district (also Udipi (IPA: [uɖupi]) in Kannada or Odipu (IPA: [oɖipu]) in Tulu language) is an administrative subdivision in the Karnataka state of India, with the district headquarters in the city of Udupi. It is situated in the Canara old north Malabar coastal region. There are seven taluks, 233 villages and 21 towns in Udupi district. The three northern tehsils of Udupi, Kundapur and Karkala, were partitioned from Dakshina Kannada district (South Canara) to form Udupi district on 25 August 1997. Moodabidri was officially declared as new tehsil (taluk) in 2018.

In February 2018, the district was split to into 3 more taluks, with Byndoor being carved out of Kundapur taluk and the Udupi taluk being split into three parts. Along with the initial Udupi taluk, Kapu, Brahmavar and Hebri were created.

Dinakar Babu and Sheela K Shetty of the Bharatiya Janata Party (BJP) are the current president (Sarpanch) and vice-president of the Udupi Zilla Panchayat, respectively, after the election held at the Zilla Panchayat on 27 April 2016.^{[citation needed]}

Udupi district is surrounded by Uttara Kannada district in north, Dakshina Kannada district in southern direction. Shimoga district borders on north east side and Chikmagalur district on east. The Arabian Sea is west of Udupi district.

Udupi district is connected by road and railway line. The National highway 66 (previously NH-17) is the main highway road of Udupi district. National highway 169A connects this district with Thirthahalli in Shivamogga district but it is very narrow at many places and only mini buses and mini lorries are allowed on Agumbe ghat through which this national highway 169A passes. The national highway 169 (previously NH 13) from Mangaluru to Shivamogga passes through Sanoor, Karkala, Bajagoli, Mudar of this district. There are few state highways(SH) built and maintained by Karnataka public works department (P.W.D.). Main District Roads (M.D.R) connect villages and towns of the district.

Konkan Railway connects Udupi with Goa, Maharashtra and Kerala states. Udupi, Byndoor, Kundapura, Barkur, Innanje, and Padubidre are few railway stations on Konkan railway line. There are trains from Udupi to state capital Bangalore, Mangalore, Kasaragod, Margao, Thane and Mumbai.

According to the 2011 census Udupi district has a population of 1,177,361. This gives it a ranking of 403rd in India (out of a total of 640). The district has a population density of 304 inhabitants per square kilometre (790/sq mi). Its population growth rate over the decade 2001-2011 was 5.9%.

Udupi district has 253,078 households, population of 1,177,361 of which 562,131 are males and 615,230 are females. The population of children between age 0-6 is 103,160 which is 8.76% of the total population. The sex-ratio of Udupi district is around 1094 compared to 973 which is average of Karnataka state. The literacy rate of Udupi district is 78.69% out of which 82.85% males are literate and 74.89% females are literate. The total area of Udupi is 3,582 km² (1,383 sq mi) with a population density of 329 km² (127 sq mi).