Images Journal gives it a positive review but says, "A word of caution concerning Let Sleeping Corpses Lie: the first hour of this movie is extremely slow-moving, constructed more as a mystery than as an out-and-out horror film" and concludes, "Modern audiences might demand a little bit more gut-munching, I suppose, but I’m quite happy with Let Sleeping Corpses Lie just the way it is."
Stomp Tokyo concludes by saying the film:
has lapsed into semi-obscurity, overshadowed by the more graphic and intense Romero films and the wave of Italian gut-munchers that followed the success of Dawn of the Dead. This is truly unfortunate, as Let Sleeping Corpses Lie is not as immediately disposable as many of its kin, and deserves more recognition as an attempt to expand Romero's zombie genre in a new, halfway thoughtful direction.Moria says it "emerges as one of the better copies of Night of the Living Dead (1968)." Horror Movie a Day has a positive review. Horrorpedia has screenshots. Rotten Tomatoes has a critics score of 79%.