HMS Aire, later renamed Tamar, was a River-class frigate of the Royal Navy (RN).

Aire was built to the RN's specifications as a Group II River-class frigate.

The ships were designed by naval engineer William Reed, of Smith's Dock Company of South Bank-on-Tees, to have the endurance and anti-submarine capabilities of the Black Swan-class sloops, while being quick and cheap to build in civil dockyards using the machinery (e.g. reciprocating steam engines instead of turbines) and construction techniques pioneered in the building of the Flower-class corvettes.

On 20 December 1946, as Aire was sailing from Hong Kong to Singapore, she encountered a typhoon.

The ship grounded upon Bombay Reef in the East China Sea and became a total loss.