thumb|280px|Serpent's Wall near the village of Denysy, [[Boryspil Raion]]
thumb|Wall near village of Ivankovychi
thumb|An incomplete map of the Serpent's Wall compiled by V. B. Antonovich (1884). It contains errors and inaccuracies.
The Serpent's Wall () is an ancient system of earthworks (valla) located in the middle Dnieper Ukraine (Naddniprianshchyna) that stretch across primarily Kyiv Oblast, Ukraine. They seem to be similar in purpose and character to Trajan's Wall situated to the southwest in Bessarabia. The remaining ancient walls have a total length of 1,000 km harnessed it to a giant plow and furrowed the earth.