氧化钇是一种无机化合物，化学式为Y₂O₃。它是一种白色粉末，难溶于水，易溶于酸。

白色粉末。不溶于水和碱，溶于酸和醇。露置于空气中时易吸收二氧化碳和水而变质。

Yttrium oxide, also known as yttria, is Y₂O₃. It is an air-stable, white solid substance. Yttrium oxide is used as a common starting material for both materials science as well as inorganic compounds.