HMS Rainbow (N16)
 HMS Rainbow was a Rainbow-class submarine of the Royal Navy. She was designed as a long range patrol submarine. She served in the Far East until 1940.She went missing on 25 September 1940. She was due to be back in Alexandria on 16 October 1940. She is believed to have been sunk in a collision with an Italian merchant ship Antonietta Costa when she was attacking a convoy on 4 October 1940.