The Neajlov is a right tributary of the Arges in Romania.
The Neajlov rises on the southern outskirts of the city of Pitesti Arges in a circle. It flows in a southeasterly direction parallel to the Arges by the Wallachian plains south of Bucharest over and hits shortly after Comana on the Arges. The Neajlov has a length of 186 km. The catchment area covers 3720 km ².