William Swanson may refer to:
William Swanson (artist) (born 1970), Californian painter William Swanson (Nebraska politician) (1922–2007), American politician from Nebraska William Swanson (New Zealand politician) (1819–1903), New Zealand politician William H. Swanson (born 1949), chairman and chief executive officer of Raytheon Company Bill Swanson (baseball) (1888–1954), United States Major League Baseball player