The coin sorting system includes a feed unit (A), a sorting unit (B), and a passageway member (P). Each unit (A; B) has a rotary disc (2; 4) and a stationary member (1; 3) opposed to the disc. Each disc (2; 4) has a rotating axis inclined relative to a horizontal plane. A guide passageway (10) with an outlet (19a) thorough which coins are fed one by one as the disc (2) rotates is formed on the stationary member (1) of the feed unit (A). Provided on the stationary member (3) of the sorting unit (B) are a conveying passageway (32) with an inlet (34) thorough which the coins fed from the outlet (19a) are introduced one by one and multiple sorting devices (6a, 6b; 5a to 5e) each for selectively ejecting the coins. A rolling-coin passageway (7) is formed on the passageway member (P) extending aslope to cause the coins to roll from the outlet (19a) to the inlet (34) under own weight thereof.