阿波罗登月舱（Apollo Lunar Module）是阿波罗宇宙飞船登月直接登月的部分，由美国的阿波罗计划为达到登月并成功返回而建。登月舱又被其制造商称作“LM”（月面模块），也叫做“LEM”（登月模块）。

登月舱的设计目标是在6.65米³的空间内容纳两名宇航员。登月舱共6.4米高，4.3米宽，有四个支撑脚。登月舱由上升级和下降级组成；登月舱的总质量，以降落部分(10,334千克)为主，达15,264千克。

The Apollo Lunar Module (LM), originally designated the Lunar Excursion Module (LEM), was the lander portion of the Apollo spacecraft built for the US Apollo program by Grumman Aircraft to carry a crew of two from lunar orbit to the surface and back. Designed for lunar orbit rendezvous, it consisted of an ascent stage and descent stage, and was ferried to lunar orbit by its companion Command and Service Module (CSM), a separate spacecraft of approximately twice its mass, which also took the astronauts home to Earth. After completing its mission, the LM was discarded. It was capable of operation only in outer space; structurally and aerodynamically it was incapable of flight through the Earth's atmosphere. The Lunar Module was the first, and to date only, manned spacecraft to operate exclusively in the airless vacuum of space.