A holder for cutting tool according to an embodiment of the present invention supports a cutting insert having a rake surface, a flank surface, and a cutting edge. The holder for a cutting tool according to the embodiment includes a holder main body having a seating surface on which the cutting insert is placed, a pressing member for positioning and fixing the cutting insert on the holder main body, and a fixing member for fixing the pressing member to the holder main body. The pressing member has a tip portion which is an end portion close the cutting edge and a base end portion which is an end portion far from the cutting edge. The tip portion is provided with a first coolant ejection port. A first flow path is provided inside the holder main body. A coolant reservoir and a second flow path are provided inside the pressing member. In the direction from the tip portion to the base end portion, the coolant reservoir is disposed closer to the base end portion than the position where the pressing member is fixed to the holder main body.