| Perdoor | |
| Other Name: | Perdur |
| Settlement Type: | town |
| Pushpin Map: | India Karnataka |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Karnataka, India |
| Coordinates: | 13.384°N 74.904°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Karnataka |
| Subdivision Type2: | District |
| Subdivision Name2: | Udupi |
| Unit Pref: | Metric |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Kannada, Tulu |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code Type: | PIN |
| Postal Code: | 576 124 |
| Area Code Type: | Telephone code |
| Area Code: | 08252 |
| Registration Plate: | KA-20 |
Perdoor or Perdur is a town in the Udupi district in coastal Karnataka in the country of India. It is located about 20 km from Udupi on the way to Hebri.
Perdoor has an ancient temple of Lord Sri Ananthapadmanabha in the center of the village which is known to be more than 1,000 years old. There is a pushkarani (water tank with steps on all the sides) attached to the temple. The temple is famous for the offering of 1001 (savirada ondu) bananas by people to the deity upon fulfillment of their wishes (harike seva). Sri Ananthapadmanabha car festival (or "Jatra") typically falls on 16 March and is energetically celebrated in the form of jatra. Many people join the festival on that day. Saviraprandh is offered during the jatra to Sri Ananthapadmanabha Swamy.
Perdoor sankranti in every month is very famous and attracts thousands of people.
There are three banks in Perdoor.
Frequent bus service is available from the district headquarters of Udupi. Buses plying from Udupi to Shivamogga, Bhadravati and many other via Agumbe route pass through Perdoor on the way to Someshwar via Hebri. Local transport is through autorickshaw and jeep. There are plenty of buses plying from Udipi to Hebri (via Perdoor). The average commuting time is approximately 35 minutes by bus (Udupi to Perdur). Surrounding villages are Bairampally, Bellampally, Bannapally, etc.
A high school, started by Manipal Education Academy, has provided education for children from in and around the village for many decades. Perdoor also has B.M Primary School, which was started more than 100 years ago and provides education up to 7th grade. The village also has one other Primary school called AP School. Thousands of children have studied in these two primary schools. A previous B.M. School for primary education was re-branded and converted into an English Medium School. Perdoor has an Industrial training institute. For the past 30 years, Perdoor High School has admitted students from Doopadakatte, Alangaar, Bukkigudde, Paadigaara, Hathrabailu, Gundyadka, Kallangala, Santyaar, Alangaar, Donderangadi and Hebri. During the academic year 2011-12, a full-time college with Science and Arts degrees was founded, balebailu school of primary education is famous in perdoor village.