Ash Hill is a volcano in Wiri, in the Auckland volcanic field, in New Zealand.

A low tuff cone with an explosion crater about 150m wide, it is now covered by industrial development.

It peaked at roughly 30 metres above sea level (approximately 8 metres higher than the surrounding land).

Radiocarbon dating gave Ash Hill the age of 31,800 +/- 159 calendar years BP, a similar age to nearby Wiri Mountain.

This Auckland Region-related geography article is a stub.