微小纺锤形噬菌体科（Fuselloviridae）是双链DNA病毒中的一个科，该类病毒外观呈纺锤状，主要感染于古细菌。

下有一属：

• 微小纺锤形噬菌体属(Fusellovirus)

代表种：

• • 硫化裂叶噬菌体(Sulfolobus virus SSV1)

Fuselloviridae is a family of viruses. Sulfolobus species, specifically shibatae, solfataricus, and islandicus, serve as natural hosts. There are currently nine species in this family, divided among 2 genera. The Fuselloviridae are ubiquitous in high-temperature (≥70 °C), acidic (pH ≤4) hot springs around the world.