The Lyme class were a class of two 24-gun sixth-rate frigates of the Royal Navy.

They served during the War of the Austrian Succession and the Seven Years' War.

They were built to the draught of a French privateer named Le Tygre, which had been captured earlier in 1747.

They were initially rated as 24-gun ships, in spite of having four 3-pdr guns mounted on the quarterdeck, as well as the twenty-four 9-pdr guns forming their primary battery on the upper deck.

They are normally seen as the first true sailing frigates to be built for the Royal Navy.