Cracroft Caverns, Military cave complex in Cashmere, Christchurch, New Zealand.

Cracroft Caverns, also called the Cashmere Caverns, are a series of large chambers cut into the hill of the Cashmere suburb of Christchurch. The largest cavern is 7 metres high, 10 metres wide and 30 metres long, and the chambers were lined with prestressed concrete. Railways were laid inside for access and for removing waste soil.

Work on the tunnels began in 1942 after the military commandeered the Cracroft Wilson estate, founded by Sir John Cracroft Wilson in 1854, for its Southern Group headquarters. Railways were laid to move waste soil, and prestressed concrete lined the chambers. Construction stopped abruptly in 1944 as the invasion threat receded, with the bunkers nearly complete; the weekend before the military left, fire destroyed Cracroft Wilson House.

The caverns are named after the Cracroft Wilson estate, established by Sir John Cracroft Wilson in 1854, which the military later commandeered for operations. This connection links the site to both early European settlement and its later military purpose.

The caverns are sealed and there is currently no access, due to damage from the 2010 Canterbury and 2011 Christchurch earthquakes. A small public park behind Princess Margaret Hospital is associated with the site. Parts of the caverns were periodically opened to the public in the past, but this is not currently possible.

After World War II, the caverns were sealed and forgotten until 1987 when reporter Jeff Field rediscovered them through information from a local gardener. This unexpected rediscovery brought an important piece of city history back to light.