This document discusses public-private-people partnerships (PPPP) as an evolution of traditional public-private partnerships (PPPs). PPPPs aim to more directly involve citizens and stakeholders in decision making to address some of the limitations of top-down PPP models. The document outlines factors for successful PPPPs, including early and active citizen involvement, use of interactive tools, clear communication, and flexibility. It also presents a potential model for PPPPs that integrates citizens' ideas and commitment, private sector resources and know-how, and public sector objectives and coordination to achieve more sustainable outcomes.