| Image Coa: | Wappen Freiensteinau.svg |
| Coordinates: | 50.4333°N 33°W |
| Image Plan: | Mittelhessen Vogelsberg Fre.png |
| State: | Hessen |
| Region: | Gießen |
| District: | Vogelsbergkreis |
| Elevation: | 444 |
| Area: | 65.67 |
| Postal Code: | 36399 |
| Area Code: | 06666 |
| Licence: | VB |
| Gemeindeschlüssel: | 06 5 35 004 |
| Website: | www.freiensteinau.de |
| Mayor: | Sascha Spielberger[1] |
| Leader Term: | 2020 - 26 |
Freiensteinau is a municipality in the Vogelsbergkreis in Hesse, Germany.
Freiensteinau lies on the southern slopes of the Vogelsberg Mountains.
Freiensteinau borders in the north on the community of Grebenhain, in the northeast on the community of Hosenfeld (Fulda district), in the east on the community of Neuhof (Fulda district), in the south on the town of Steinau an der Straße (Main-Kinzig-Kreis) and in the west on the community of Birstein (Main-Kinzig-Kreis).
The community consists of the twelve centres of Freiensteinau (administrative seat), Holzmühl, Fleschenbach, Salz, Ober-Moos, Nieder-Moos, Gunzenau, Reichlos, Weidenau, Reinhards, Hessisch Radmühl and Preußisch Radmühl.
The municipal elections on 26 March 2006 yielded the following results:
| Parties and voter coalitions | Share in % | Seats | |
| CDU | Christian Democratic Union | 25.1 | 5 |
| SPD | Social Democratic Party of Germany | 33.9 | 6 |
| FW | Freie Wähler | 41.0 | 8 |
| total | 100 | 19 | |
In July 2014 Sascha Spielberger was elected the new mayor, he started in office in December 2014, and was re-elected in 2020.
Former mayors:
The organ at the Evangelical Church in Nieder-Moos was built in 1790-1791 by Johann-Markus Oestreich from Oberbimbach near Fulda. Every year, the Nieder-Mooser Sommerkonzerte (Nieder-Moos Summer Concerts) take place around the organ.
A curious fact about the community's political history is that before Hesse's municipal reforms in the 1970s, the 12 constituent communities nowadays within Freiensteinau not only were not united, but even belonged to four different districts: Fulda, Gelnhausen, Lauterbach and Schlüchtern.