To provide a flush toilet wherein the rim inside wall portion comprises a rim inside wall upper sloped surface, and an improvement in user visibility and user rim portion cleanability is sought, flush water can be constrained from splashing outside the bowl portion by traveling by centrifugal force along the rim inside wall upper sloped surface from the inside surface formed at a relatively low height. The rim portion of the flush toilet 1 of the invention includes a rim inside wall portion 52; the rim inside wall portion 52 comprises a rim inside wall upper sloped surface 52a, and an inside surface 52b vertically extending straight up to the rim inside wall upper sloped surface; and the water supply apparatus 6 comprises a constant flow rate valve 16 for spouting a predetermined constant flow rate of flush water from the water spouting portion.