The present invention provides a quick disconnect coupler for an inflatable towable vehicle including a body member attached to the towing connection of the towable vehicle and a selectively movable arm having a first end pivotally attached to the body member. The arm is movable between a closed position where the second end of the arm engages the body member and secures the towing line, and an open position where the second end pivots out of engagement with the body member and releases the towing line from the body member. A spring biased locking pin is attached to the body member and engages the second end of the arm when in the locked position. The occupant of the towable vehicle selectively pulls a T-handle or strap attached to the spring biased locking pin to pull the locking pin out of engagement with the second end of the arm and release the towing line from the body member.