Doug Manchester is a real estate developer based in San Diego, California.
Manchester contributed $125,000 to the campaign to pass Proposition 8, the "Eliminates Right of Same-Sex Couples to Marry" Initiative (2008).
At the time, his company owned the Manchester Grand Hyatt Hotel in San Diego. Manchester's support for Proposition 8 sparked a boycott of the hotel.
In May 2011, Manchester sold the Grand Hyatt to Host Hotels and Resorts.