康都曲（Conductus），是11~13世纪以拉丁文押韵诗为歌词创作的歌曲，原先用于中世纪礼仪剧，那时为单音歌曲。后来发展出复音康都曲，尺度接近和声式，曲调皆为原创，是最早的原创复音音乐。

In medieval music, conductus (plural: conductus) is a type of sacred, but non-liturgical vocal composition for one or more voices. The word derives from Latin conducere (to escort), and the conductus was most likely sung while the lectionary was carried from its place of safekeeping to the place from which it was to be read. The conductus was one of the principal types of vocal composition of the ars antiqua period of medieval music history.