| Mattu | |
| Other Name: | Matti |
| Settlement Type: | Village |
| Pushpin Map: | India Karnataka |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Karnataka, India |
| Coordinates: | 13.2592°N 74.7378°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Karnataka |
| Subdivision Type2: | District |
| Subdivision Name2: | Udupi |
| Governing Body: | Gram panchayat |
| Unit Pref: | Metric |
| Population Total: | 6000+ |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Kannada |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Blank1 Name Sec1: | Nearest city |
| Blank1 Info Sec1: | udupi |
| Blank2 Name Sec1: | Literacy |
| Blank2 Info Sec1: | 29-39%% |
| Blank3 Name Sec1: | Lok Sabha constituency |
| Blank3 Info Sec1: | kapu |
Mattu or Matti is a village in the Udupi district of Karnataka state in India that lies on the shore of the Arabian Sea. This village can be reached from the city of Udupi by taking a right turn at Katapady on the way to Mangalore.
The village is famous for a particular variety of brinjal (eggplant) that is grown only in this village called Mattu Gulla. The brinjal grown here is light green in colour and is spherical, unlike the usual purple-coloured variety. The first brinjal harvested is offered to Lord Krishna at Krishna Matha, Udupi. The seeds for growing this type of brinjal is said to be given by Shri Vadiraja swamiji.
This village is also famous for a bridge named as Annekatta which connects this tiny village to Katapady. On one side of this bridge lies Mattu village while on other side lies a bus stop because bus is the only public transport available for the people of this village other than auto rickshaw. This village lies in the midst of Arabian Sea in the west and a small river in the east side.
Mattu village is spread over an area of 243.62 hectares and has 547 households residing in it, as of the 2011 census.[1] It has a total population of 2,506 persons and 179 children under the age of 6 years as of 2011. As per the 2011 census, the sex ratio is higher for women as there are 1,241 males and 1,268 females. there is a glowing beach in mattu.
2,163 persons are literate here, out of which 1,100 are men and 1,063 women. 157 persons from Scheduled Castes and 1 person from a Scheduled Tribe resides here.