Abstract: A multi-seat stroller includes a stroller frame having a front wheel-carrying portion, a rear wheel-carrying portion spaced apart from the front wheel-carrying portion in a longitudinal direction and mounted with a rear footrest member, and a seat-mounting portion extending in the longitudinal direction between the front and rear wheel-carrying portions. Each of a non-detachable seat member and a detachable seat member has a backrest portion and a horizontal seat portion provided with a retaining unit for mounting pivotally the backrest portion on the seat portion such that the backrest portion can be selectively disposed in one of a folded state, where the backrest portion overlies the seat portion, and an extended state, where the backrest portion extends vertically from the seat portion.