HMS Convolvulus was a Flower-class corvette of the Royal Navy in World War II.

Assigned the pennant number K45, Convolvulus was built by Charles Hill & Sons, Bristol.

Despite the small escort screen offered by the ships of the 36th Escort Group and the lone sentry duty often performed by Convolvulus, HG 84 suffered only a 22% loss rate.

[3] Captain F J Walker, RN, then leader of the 36th Escort Group said of this action: I am proud of the offensive spirit, initiative and sheer guts displayed by these Corvettes.

Convolvulus, my deputy during my absences from the convoy, never put a foot wrong.