William, Will, Bill, or Billy Holland may refer to:

Politicians William Holland (merchant), English merchant and MP for Dartmouth William Holland (politician) (1782–?), Irish-born farmer and politician in Nova Scotia William H. Holland (politician) (1841–1907), member of the Fifteenth Texas Legislature William Holland, 1st Baron Rotherham (1849–1927), British industrialist and politician

Sportsmen Baseball Will Holland (baseball, born 1862) (1862–1930) Will Holland (baseball, born 1998) Billy Holland (baseball) (1874–?), pitcher, Negro league career 1894–1908 Bill Holland (right-handed pitcher) (Elvis William Holland, 1901–1973), pitcher, Negro leagues career 1920–1941 Bill Holland (left-handed pitcher) (William David Holland, 1915–1997), pitcher, Major League career 1939

Other sports Bill Holland (sprinter) (1874–1930), track and field athlete Bill Holland (1907–1984), American racing driver Bill Holland (basketball) (1914–2000), American professional basketball player Billy Holland (born 1985), Irish rugby union player

Others William Holland (diarist) (1746–1819), English diarist William Holland (publisher) (1757–1834), British radical, author and publisher William Holland (stained glass maker) (1809–1883), British maker of stained glass William Jacob Holland (1848–1932), zoologist and paleontologist William L. Holland (1907–2008), Institute of Pacific Relations William "Will" Holland (born 1980), English musician known as Quantic Will Holland, member of the country band The Lonely Hearts

See also Holland (surname)