Multilateral High School (Bengali: এ.এ.টি.এম বহুমুখী উচ্চ বিদ্যালয়) is a secondary school situated in Shamsher Nagar, Kamalganj Upazila, Moulvibazar District, Bangladesh.

It was established in 1929[1] as ME Madrasa by the late Haji Mohammad Ustwar.

The madrasa was upgraded to a high school in 1960.

It is now named after Abbas Ali Tale Mohammad, abbreviated as A.A.T.M.

The late Khurshed Ahmed was the first student who passed matriculation from this school.