Abstract: A new security beach blanket for ensuring valuables are secure when on a beach. The inventive device includes a blanket portion having a slotted opening therethrough. The slotted opening has a zippered closure coupled therewith. The zippered closure has a ring extending upwardly therefrom. A pair of flaps are foldably coupled with the blanket portion on opposing ends of the zippered closure. Each of the flaps have a slot therethrough whereby a first flap is folded over the zippered closure with the slot thereof receiving the ring therethrough and a second flap is folded over the first flap with the slot thereof receiving the ring therethrough. A padlock couples with the ring. A rubber pouch is secured to a lower surface of the blanket portion. The rubber pouch has an open upper end disposed below the slotted opening of the blanket portion.