假病毒科（Pseudoviridae），又译作伪病毒科，是一种拥有反转录酶的单链RNA病毒。该类病毒主要感染真菌和无脊椎动物。

其下有二属：

• 假病毒属(Pseudovirus)又译作伪病毒属。
• 半病毒属(Hemivirus)，又译作反转录病毒属。

The Pseudoviridae are a family of viruses, including the following genera:

The type species Saccharomyces cerevisiae Ty1 virus, from the genus pseudovirus and the type species Drosophila melanogaster copia virus from the genus Hemivirus, both belong to the Pseudoviridae family.