房烷（英语：Housane）是一种双环烷烃，化学式为C₅H₈。它的名字来源于它的形状像房子。

Housane is a saturated cycloalkane with the formula C₅H₈. It is a colorless volatile liquid. It was named "housane" because of its shape. Structurally, the molecule consists of cyclopropane fused to cyclobutane. The synthesis of molecules containing multiple strained rings, such as housane, is a traditional endeavor in synthetic organic chemistry. This compound is prepared in several steps starting with cyclopentadiene.