乙锗烷是锗的一种氢化物，化学式为Ge₂H₆。锗化镁（Mg₂Ge）的水解可以制得乙锗烷在内的多种锗烷，其中73.6%为GeH₄，20%为Ge₂H₆，而Ge₃H₈只有1%。

它的空间构型与乙烷类似。

Digermane is an inorganic compound with the chemical formula Ge₂H₆. One of the few hydrides of germanium, it is a colourless gas. Its molecular geometry is similar to ethane. Digermane was first synthesized and examined in 1924 by Dennis, Corey, and Moore. Many of the properties of digermane and trigermane were determined in the following decade using electron diffraction studies. Further considerations of the compound involved examinations of various reactions such as pyrolysis and oxidation. Digermane appears to be most important as compound used to test theoretical predictions and explore similarities and differences between group 14 elements. However, there are a few applications utilizing digermane as a germanium precursor, including the formation of organic semiconductors and germanium nanowires.