promoter

noun

• a person or thing that promotes something, in particular.
• a person or company that finances or organizes a sporting event or theatrical production:a boxing promoter
• a person involved in setting up and funding a new company.
• a supporter of a cause or aim:Mitterrand was a fierce promoter of European integration
• (also promotor) Chemistry an additive that increases the activity of a catalyst.
• Biology a region of a DNA molecule that forms the site at which transcription of a gene starts.