| Säynätsalo | |
| Official Name: | Finnish: Säynätsalon kunta Swedish: Säynätsalo kommun |
| Settlement Type: | Former Municipality |
| Mapsize: | 150px |
| Pushpin Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Name: | Finland |
| Subdivision Type1: | Region |
| Subdivision Name1: | Central Finland |
| Subdivision Type2: | Sub-region |
| Subdivision Name2: | Jyväskylä sub-region |
| Established Title: | Founded |
| Established Date: | 1924 |
| Extinct Title: | Consolidated |
| Extinct Date: | 1993 |
| Area Footnotes: | [1] |
| Area Total Km2: | 9.0 |
| Population As Of: | November 2010 |
| Population Total: | 3340 |
| Population Density Km2: | auto |
| Population Density Metro Km2: | 371 |
| Demographics1 Info1: | % (official) |
| Demographics1 Info2: | % |
| Demographics1 Info3: | % |
| Demographics1 Info4: | % |
| Demographics2 Title1: | 0 to 14 |
| Demographics2 Info1: | % |
| Demographics2 Title2: | 15 to 64 |
| Demographics2 Info2: | % |
| Demographics2 Title3: | 65 or older |
| Demographics2 Info3: | % |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Coordinates: | 62.1383°N 71.9°W |
| Postal Code Type: | Postal code |
Säynätsalo is a former municipality in Finland and a part of Jyväskylä. As of November 2010 its population was 3,340. Säynätsalo municipality consisted of islands of Säynätsalo and Lehtisaari and also a part of Muuratsalo island. All of the islands are located on the Lake Päijänne. Also a small slice of land on the continent was part of the municipality.
Säynätsalo is famous for Säynätsalo Town Hall.
The name Säynätsalo originally referred to the main island, which gets its name from säynäs meaning "ide" and salo meaning "island". Another municipality named after the ide was Säyneinen in Northern Savonia.
The island of Säynätsalo was first mentioned in 1782 as Säynet Salo. At this time, it was an uninhabited island within the parish of Jämsä. The Korpilahti parish, including Säynätsalo, was split off from Jämsä in 1861.[2]
The businessman Johan Parviainen bought the island in 1897 and built a sawmill there in the next year. Later in 1914, he built a plywood factory.[3]
The municipality of Muurame split off from Korpilahti in 1921. The idea of a separate Säynätsalo municipality appeared in 1922 and the island became its own municipality in 1924. Lehtisaari and the northern part of Muuratsalo were added to it in 1935. More land on Muuratsalo was transferred from Muurame to Säynätsalo in 1960 and later in 1980.
Säynätsalo became a part of the town of Jyväskylä in 1993.