| Pertteli | |
| Official Name: | Finnish: Perttelin kunta Swedish: S:t Bertils kommun |
| Native Name: | Finnish: Pertteli – Swedish: S:t Bertils |
| Settlement Type: | Former municipality |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location within Finland |
| Subdivision Type: | Country |
| Subdivision Name: | Finland |
| Subdivision Type1: | Province |
| Subdivision Name1: | Western Finland |
| Subdivision Type2: | Region |
| Subdivision Name2: | Southwest Finland |
| Subdivision Type3: | Sub-region |
| Subdivision Name3: | Salo |
| Extinct Title: | Merged with Salo |
| Extinct Date: | January 1, 2009 |
| Seat: | Inkere |
| Leader Title: | City manager |
| Leader Name: | Ilkka Salminen |
| Unit Pref: | Metric |
| Area Total Km2: | 156.08 |
| Area Land Km2: | 154.15 |
| Area Water Km2: | 1.93 |
| Area Rank: | 356th |
| Population Total: | 3,773 |
| Population As Of: | 2003 |
| Population Rank: | 248th |
| Population Density Km2: | auto |
| Population Note: | +1.6 % change |
| Blank Name: | Official languages |
| Blank Info: | Finnish |
| Blank1 Name: | Urbanisation |
| Blank1 Info: | 59.5% |
| Blank2 Name: | Unemployment rate |
| Blank2 Info: | 8.3% |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Website: | http://www.pertteli.fi/ |
Pertteli (in Finnish pronounced as /ˈpertːeli/); Swedish: S:t Bertils) is a former municipality of Finland. It was consolidated with Salo on January 1, 2009.
It is located in the province of Western Finland and is part of the Southwest Finland region. The municipality had a population of 3,833 (2004-12-31) and covered an area of 156.08 km2 of which 1.93 km2 is water. The population density was 24.87 inhabitants per km2. Inkere was the administrative center of Pertteli.
The municipality was unilingually Finnish.
Saint Bartholomew is the namesake of the municipality and is the subject of the heraldic shield.