Strašínská jeskyně, Natural monument cave in Strašín, Czech Republic.

Strašínská jeskyně is a cave in the Sušice-Strakonice limestone system near Strašín. From the entrance it slopes down into a hall 23 m long, 12 m wide and up to 3 m high, ending in a small lake; side passages branch off, and the total length is about 200 m. The ceiling has bowl- and pot-shaped hollows, and there are no stalactites.

Strašínská jeskyně is a natural monument, ev. no. 416, managed by the Agency for Nature Conservation and Landscape Protection of the Czech Republic. Its protection covers the only larger natural cave in the Sušice–Strakonice limestone system. The cave was opened to the public for a fee in 2012; it is now closed until further notice.

The cave lies on the right side of the II/171 road towards Rozsedel, less than a kilometre west-northwest of Strašín, and is administered by the Agency for Nature Conservation and Landscape Protection of the Czech Republic. It is registered as natural monument No. 416, and the village of Strašín keeps an unofficial page about it.

The cave is closed to the public until further notice, so visits cannot currently be made. It lies less than a kilometre west-northwest of Strašín, on the right side of the II/171 road towards Rozsedel.

The ceiling displays unusual bowl-shaped indentations created by corrosion processes over time. These features reveal how water and rock interact within the cave.