A media feeder is provided, which includes: a raisable and lowerable hopper on which multiple media are stacked; an elevator moving the hopper to a raised or lowered position; a pick-up roller picking up an upper media stacked on the hopper by rotating while contacting the uppermost media when the hopper is at the raised position; a friction member disposed on the upper surface of the hopper, at a position facing the pick-up roller; and a projecting member disposed below the hopper. The hopper includes a window hole formed in the vicinity of the friction member. When the hopper is at the lowered position, the projecting member projects from the upper surface of the hoper through the window hole. Thus, when media are placed in the feeder, even the lowermost medium does not come into contact with the friction member, thereby facilitating the placement and positional adjustment of the media.