The present disclosure relates to a liquid lens and a lens module having the same. The liquid lens includes an enclosure, an elastic shell and a light pervious liquid. The enclosure has a top wall and defines a through opening in the top wall. The elastic shell is received in the enclosure and is filled with the light pervious liquid. The elastic shell includes an inner portion and an outer convex portion. The convex portion protrudes from the outer enclosure via the through opening.