French frigate Infatigable (1800)

Infatigable was a 40-gun Valeureuse class frigate of the French Navy, built at Le Havre in 1797-1800. She took part in Allemand's expedition of 1805.

In the Action of 25 September 1806, she and Gloire, Minerve and Armide were after leaving Rochefort captured by a four-ship squadron under Samuel Hood.

She was taken into Royal Navy service as HMS Immortalite, but never used and broken up in 1811.