Abstract: The present invention is a catheter actuation handle for deflecting a distal end of a tubular catheter body including first, second and third actuation wires extending from a proximal end of the body. The handle comprises a grip portion, a first actuator, first and second stationary gear racks, first and second moveable gear racks, first and second pinion gears, and a second actuator. The grip portion is coupled to the proximal end of the body. The first actuator is pivotally coupled to the grip portion. The first and second stationary gear racks are fixed relative to the grip portion. The first and second moveable gear racks are moveable relative to the grip portion and couple to the first and second actuation wires, respectively. The first pinion gear is coupled to the first actuator and located between, and engaged with, the first stationary gear rack and the first moveable gear rack.