The Negotiation Institute (TNI) | 2,277 followers on LinkedIn. Every interaction is a negotiation. | The Negotiation Institute (TNI) provides customized executive training programs to corporate, government, educational and non-profit entities in the United States and internationally. We offer in-house training seminars, keynote speakers and a faculty of industry experts in the areas of negotiation, conflict resolution, sales, procurement, supply chain management, leadership, presentation, communication, regulatory affairs, and corporate diversity. Our programs are interactive, results-focused and completely customized according to the specific challenges and goals of the organizations we work with.