莺科，学名Sylviidae，在鸟类DNA分类系统中是鸟纲雀形目中的一个科。在鸟类传统分类系统中，莺科的所有种作为鹟科下的一个亚科莺亚科(Sylviinae)的成员。莺科鸟类分布在欧洲、亚洲和非洲的一小部分，大多为候鸟。

主要包括以下几属：

其他一些传统上属于本属的鸟类，被归入其他一些科。主要包括：

以下属归入画眉科(Timaliidae)：

以下属归入苇莺科(Acrocephalidae)：

以下属归入大尾莺科(Megaluridae)：

以下属归入树莺科(Cettiidae)：

以下两属归入柳莺科(Phylloscopidae)：

Old World warblers are a large group of birds formerly grouped together in the bird family Sylviidae. The family held over 400 species in over 70 genera, and were the source of much taxonomic confusion. Two families were split out initially, the cisticolas into Cisticolidae and the kinglets into Regulidae. In the past ten years they have been the subject of much research and many species are now placed into other families, including the Acrocephalidae, Cettiidae, Phylloscopidae, and Megaluridae. In addition some species have been moved into existing families or have not yet had their placement fully resolved. A smaller family of warblers, together with some babblers formerly placed in the family Timaliidae and the parrotbills, are retained in a much smaller family Sylviidae.