A lever-support bracket apparatus for a small waterboat allows a lever-support bracket and a socket section to be increased in strength and rigidity, by combining these functions in a single unitary apparatus. Using the described apparatus, a lever-support bracket and a socket section can be laid out rather easily, and the number of members can be reduced. With a lever support bracket apparatus 30, a reverse operation lever 34 is allowed to operate a reverse bucket 21, and the reverse operation lever 34 is arranged proximate the front end of a seat 23 and is attached, to swing freely, to a hull 11 using the lever-support bracket 31. Further, to the lever-support bracket 31, a socket section 55 is formed, to be a piece therewith, into which a tongue-shaped piece 51 at a front end 50 of the seat 23 can be inserted.