A lithium air battery includes: a lithium negative electrode; a positive electrode; and an ion conductive oxygen-blocking film which is disposed on the lithium negative electrode, wherein the ion conductive oxygen-blocking film includes a first polymer including a polyvinyl alcohol or a polyvinyl alcohol blend, and a lithium salt, and wherein the ion conductive oxygen-blocking film has an oxygen transmission rate of about 10 milliliters per square meter per day to about 10,000 milliliters per square meter per day. Also disclosed is a method of manufacturing a lithium air battery.