A tape feeder includes a tape guideway that has an insertion port, a first tape transporter that transports a leading tape to a component extraction position in the tape guideway, a second tape transporter that transports the following tape from the insertion port to the first tape transporter, a following tape holder that has a first supporter that supports one side of an uninserted portion of the following tape in a width direction from a lower side, and a second supporter that supports the other side of the uninserted portion in a width direction from the lower side, and holds the uninserted portion of the following tape, and a displacer that displaces the uninserted portion of the following tape from the following tape holder. A width of one end portion of the second supporter decreases toward the insertion port.