Abstract: A folding high chair having several use positions comprises a base frame 2 consisting of two pairs of legs 3, 4 substantially disposed in use in the form of an inverted V; a seat 5 provided with a supporting framework 6 slidably engaged, by means of sleeves 10, along the front legs 3 of the base frame 2; a U-shaped control lever 11 provided with two extensions 13 rotatably engaged, at the free ends thereof, with the supporting frame 6 and supported, at an intermediate point thereof, by tension rods 14 rotatably engaged with the upper part of the base frame 2 and also provided with a base crosspiece 12 located between the extensions 13 and operable as a pedal to cause the seat 5 to move from a lowered position to a maximally raised position; fastening means being also provided for rigidly securing said seat to said base frame at predetermined heights thereof.