Test Pit 3 is a location in Xenoblade Chronicles. It is located on the ground floor of the Ether Mine, west of Test Pit 1.

A Rock and Junk Krabble inhabit the Test Pit itself, while a Mechon M32X patrols nearby. A WInd Ether Crystal deposit containing Agility Up II and Agility Down II crystals can be found near here. The rank of these crystals increases during Colony 6 Reconstruction when Colony 6's Nature level is increased to level 3 and above.