| Bahçeşehir Muhsin Ertuğrul Theatre | |
| Native Name: | Bahçeşehir Muhsin Ertuğrul Tiyatrosu |
| Pushpin Map: | Istanbul |
| Pushpin Label Position: | left |
| Coordinates: | 41.0625°N 28.6842°W |
| Address: | Bahçeşehir, Şehir Polis Gaffar Okkan Sok. |
| City: | Başakşehir, Istanbul |
| Country: | Turkey |
| Owner: | Başakşehir Municipality |
| Capacity: | 318 |
| Type: | Local authority |
| Acreage: | 1920m2 |
Bahçeşehir Muhsin Ertuğrul Theatre (Turkish: Bahçeşehir Muhsin Ertuğrul Tiyatrosu) is a theatre venue located in Bahçeşehir quarter of Başakşehir district in Istanbul, Turkey. It is owned and operated by Başakşehir Municipality. The theatre is named in honor of the Turkish stage actor and director Muhsin Ertuğrul (1892–1979).
The theatre is situated in 2. Kısım neighborhood of Bahçeşehir, a satellite town of Istanbul. The theatre is built on an area of 1920m2. The theatre's audience hall occupies 216m2, and has a total seating capacity of 318, including 70 seats in a second level gallery that serves the theatre balcony.
The 145m2 large stage has a clearance of 14m (46feet). The stage is named after Haldun Dormen (born 1928), a Turkish actor and film director, who contributed much to the establishment of this theatre.