Bill Tieleman is a lobbyist and former NDP political strategist in Vancouver, British Columbia, Canada. He is known for opposing the 2009 referendum on electoral reform, and the 2018 referendum on whether to hold a second vote to choose a proportional voting system. Tieleman is also known for strongly advocating hydraulic fracturing to extract methane for export from BC, and for denying the role of global warming in BC forest fires. Tieleman supported the Site C dam & opposed the 2017 governing agreement between three elected BC Greens & NDP leader John Horgan.