Others
- Billy Gray (actor) (born 1938), American actor who portrayed teenager Bud Anderson on TV's Father Knows Best
- William J. Gray, (born 1965), author of Guide star charting software; asteroid Billgray named after him
- William Gray (aviator) (born 1898), World War I flying ace
- William Gray (screenwriter), known for The Changeling, The Philadelphia Experiment
- William Gray (guitarist) in The Trip
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