William, Bill, or Willie Gates may refer to:

• William "Pop" Gates (1917–1999), American basketball player
• Bill Gates (footballer) (1944–2023), English central defender for Middlesbrough
• William Gates (basketball) (born 1971), American guard, subject of 1994 film Hoop Dreams
• Willie Gates (born 1987), American mixed martial artist

• Bill Gates (born 1955), American business magnate and co-founder of Microsoft Corporation
• William Gates (soldier) (1788–1868), American Army officer who served 66 years
• William E. Gates (1863–1940), American archeologist of Mayan language
• William Thomas George Gates (1908–1990), British banker and expert on Africa
• Bill Gates Sr. (1925–2020), American attorney and philanthropist, father of Bill Gates
• ill.Gates (born 1982), Canadian electronic music producer and DJ, parodying name of Bill Gates

• "Bill Gates", song by American rapper Lil Wayne from 2010 album I Am Not a Human Being
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