Coonamia (/ˈkunʌmaɪʌ/ koonum-EYE-uh) is a lightly populated rural locality in the Mid North region of South Australia, on the plains between Port Pirie and the Southern Flinders Ranges.

[3] The name Coonamia is a local Aboriginal Nukunu/Ngadjuri word meaning "cold".

[2] A "provisional stopping place" on the Port Pirie to Cockburn narrow-gauge railway line was opened in 1929 on Railway Terrace South, Coonamia, near the intersection with Old Race Course Road (now called Hillview Road).

In 1937 a new, more direct, line connecting to Adelaide followed a different route that bypassed Coonamia; the stopping place became little used and eventually closed.

It was re-established for interstate pre-booked passengers from 1989 but was closed in the early 2010s; now only the "Coonamia" sign remains.