Abstract: An aquatic weed cutter for cutting aquatic plants and their root systems. The aquatic weed cutter includes a water vehicle having a drive system connected to at least two shafts that project out of the vehicle. Each shaft has a circular cutting blade mounted at the distal end of the shaft. The cutting blades are positioned for rotation in a generally vertical plane for cutting aquatic plants and their root systems, as well as for propelling the vehicle through the water. The drive system is also used to control the position of the shafts below the surface of the water in order to position the tips of the cutting blades at various distances below as well as above the surface of the water bed. The shafts are positioned from one another in order to provide an overlapping relationship between each cutting blade. A forward cleaning blade is placed forward of each of the cutting blades with teeth having leading and trailing pitched portions to keep the cutting blades clean of debris.